explain xkcd - User contributions [en]

Talk:2453: Excel Lambda

2021-04-22T20:23:00Z

108.162.219.218:

Another ghost cueball comic! You can see it in the last panel. [[Special:Contributions/108.162.216.54|108.162.216.54]] 06:03, 22 April 2021 (UTC)

==> Is that something that has happened before? First time noticing it. Is it just a remnant of the sketching? Of doest it mean something? [[Special:Contributions/162.158.93.213|162.158.93.213]] 13:21, 22 April 2021 (UTC)

Someone needs to add an explanation of the Lambda, and possibly how Excel is implementing it. (I suppose it would immediately be useful for cutting down common re-use within a formula line, though =IF(ISERR(FIND(":",A1)),A1,RIGHT(A1,LEN(A1)-FIND(":",A1))) is a trivial repeat of the FIND, once to check, then again to do, I often need to do far more nested things, check for being a value, repeat the FIND to deal with the LEFT, etc.) But it has the smell of being effectively a Macro in this instance. Which already seems to me to be the only way to run a ''proper'' Turing Machine in an Excel column without hitting Circular Reference issues.

Would it be a stretch to say that Turing's inability to prove if Cueball will stop is actually equivalent to the halting problem, except it is for Cueball and not an arbitrary Turing machine? I thought that was pretty funny. [[User:XTheBHox|xTheBHox]] ([[User talk:XTheBHox|talk]]) 11:30, 22 April 2021 (UTC)

Microsoft themselves claim that the addition of LAMBDA makes Excel turing-comlpete (see here: https://techcommunity.microsoft.com/t5/excel-blog/announcing-lambda-turn-excel-formulas-into-custom-functions/ba-p/1925546). Based on this comic, I would argue that it already was... [[Special:Contributions/162.158.159.36|162.158.159.36]] 12:55, 22 April 2021 (UTC)

==> Someone has already made Conway's game of life in excel (http://dailydoseofexcel.com/archives/2011/04/06/conways-game-of-life-simulation-in-excel) and game of life has been shown to be Turing complete. [[User:Kvarts314|Kvarts314]] ([[User talk:Kvarts314|talk]]) 13:28, 22 April 2021 (UTC)

==> Since Excel has a way to store and do math on numbers, and also a way to 'point' to a certain cell, it is Turing-complete. A lambda function is not necessary for Turing-completeness (e.x. a turing machine does not have one.) [[Special:Contributions/162.158.255.250|162.158.255.250]] 15:14, 22 April 2021 (UTC)

it should probably be mentioned that the number of excel rows is emphatically *not* infinite, so only simple turing machines could be implemented this way. [[Special:Contributions/162.158.93.15|162.158.93.15]] 17:20, 22 April 2021 (UTC)

:In fact, it technically isn't Turing complete, as it has only a finite amount of data. It might be a finite-state-machine or the like, though. --[[Special:Contributions/108.162.219.218|108.162.219.218]] 20:22, 22 April 2021 (UTC)

Talk:2453: Excel Lambda

2021-04-22T20:22:19Z

108.162.219.218:

Another ghost cueball comic! You can see it in the last panel. [[Special:Contributions/108.162.216.54|108.162.216.54]] 06:03, 22 April 2021 (UTC)

==> Is that something that has happened before? First time noticing it. Is it just a remnant of the sketching? Of doest it mean something? [[Special:Contributions/162.158.93.213|162.158.93.213]] 13:21, 22 April 2021 (UTC)

Someone needs to add an explanation of the Lambda, and possibly how Excel is implementing it. (I suppose it would immediately be useful for cutting down common re-use within a formula line, though =IF(ISERR(FIND(":",A1)),A1,RIGHT(A1,LEN(A1)-FIND(":",A1))) is a trivial repeat of the FIND, once to check, then again to do, I often need to do far more nested things, check for being a value, repeat the FIND to deal with the LEFT, etc.) But it has the smell of being effectively a Macro in this instance. Which already seems to me to be the only way to run a ''proper'' Turing Machine in an Excel column without hitting Circular Reference issues.

Would it be a stretch to say that Turing's inability to prove if Cueball will stop is actually equivalent to the halting problem, except it is for Cueball and not an arbitrary Turing machine? I thought that was pretty funny. [[User:XTheBHox|xTheBHox]] ([[User talk:XTheBHox|talk]]) 11:30, 22 April 2021 (UTC)

Microsoft themselves claim that the addition of LAMBDA makes Excel turing-comlpete (see here: https://techcommunity.microsoft.com/t5/excel-blog/announcing-lambda-turn-excel-formulas-into-custom-functions/ba-p/1925546). Based on this comic, I would argue that it already was... [[Special:Contributions/162.158.159.36|162.158.159.36]] 12:55, 22 April 2021 (UTC)

==> Someone has already made Conway's game of life in excel (http://dailydoseofexcel.com/archives/2011/04/06/conways-game-of-life-simulation-in-excel) and game of life has been shown to be Turing complete. [[User:Kvarts314|Kvarts314]] ([[User talk:Kvarts314|talk]]) 13:28, 22 April 2021 (UTC)

==> Since Excel has a way to store and do math on numbers, and also a way to 'point' to a certain cell, it is Turing-complete. A lambda function is not necessary for Turing-completeness (e.x. a turing machine does not have one.) [[Special:Contributions/162.158.255.250|162.158.255.250]] 15:14, 22 April 2021 (UTC)

it should probably be mentioned that the number of excel rows is emphatically *not* infinite, so only simple turing machines could be implemented this way. [[Special:Contributions/162.158.93.15|162.158.93.15]] 17:20, 22 April 2021 (UTC)

:In fact, I technically isn't Turing complete, as it has only a finite amount of data. It might be a finite-state-machine or the like, though. --[[Special:Contributions/108.162.219.218|108.162.219.218]] 20:22, 22 April 2021 (UTC)

2445: Checkbox

2021-04-06T14:36:24Z

108.162.219.218: Hey, don't usually edit, hope this is all good

{{comic
| number = 2445
| date = April 1, 2021
| title = Checkbox
| image = checkbox.gif
| titletext = Check check check ... chhecck chhecck chhecck ... check check check
}}
{{TOC}}
*To experience the interactivity of this game, visit the {{xkcd|2445|original comic}}.
==Explanation==
{{incomplete|Created by a CHECKBOX. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}
This was the 11th [[:Category:April fools' comics|April fools' comic]] released by [[Randall]]. The previous fools comic was [[2288: Collector's Edition]], which was delayed two days and released on Friday April 3, 2020.

The comic looks similar to a loading screen. The actual comic (this “loading screen”) consists of a gif of a checkbox (hence the name).

The frame is replaced with an interactive panel. In the center is a check box, which clears itself immediately when checked. In the bottom right is a mute button, which begins muted. By unmuting, sounds are played when the check box is checked.

Under the checkbox is a scrolling visual representation of the timing and duration of clicks in the check box, which also produce matching beeping sounds when unmuted. The representation either has a dot for short press or a bar for long press; the length of either is not effected by the length of the actual time the box is pressed, only if it is above the or below the duration that defines if it is a dot or a bar.

By varying between brief and long presses, and brief and long intervals between presses, it is possible to enter characters in Morse Code.

The check box then begins operating by itself, producing sounds which can be decoded as Morse Code. These responses are also printed in the browser's JavaScript console in both plain text and a textual representation of Morse code. If left without any initial input for 30 seconds it would send the message CQ (meaning "Seek You").

The title text hints at the use of Morse Code in the comic; interpreting the "check" as a Morse Code dot and the "chhecck" (a long check) as a Morse Code dash gives ...---..., which is the Morse Code for "SOS", the international distress signal. Incidentally, inputting the SOS signal gives "YOU TOO?".

For the majority of inputs, the check box responds with a random selection from the following list:
* COME AGAIN
* HUH
* NOT FOLLOWING
* SAY AGAIN
* TRY THAT AGAIN
* WHAT

Some keywords, however, have [[#Special Responses´|special responses]].

This comic has a [[xkcd_Header_text#Unique_header_text|unique header text]], see [[xkcd_Header_text#Checkbox|the details here]]. The header states that "This comic was put together byMax Goodhart, Patrick, Amber, Benjamin Staffin, Kevin Cotrone, and Michael Leuchtenburg. Read Max's [https://chromakode.com/post/checkbox blog post] on development of the comic.

==Special Responses==
[.s are short presses, -s are long presses, and /s are spaces (just for readability)]

{| class="wikitable"
! Message & response
! Morse Code
! Explanation
|-
|XKCD -> FILE NOT FOUND
|[-..- -.- -.-. -..] -> [..-. .. .-.. . / -. --- - / ..-. --- ..- -. -..]
|
|-
|XKCD -> A CROSS THREE LETTERS
|[-..- -.- -.-. -..] -> [.- / -.-. .-. --- ... ... / - .... .-. . . / .-.. . - - . .-. ...]
|
|-
|HI -> HELLO! ANYBODY OUT THERE?
|[.... ..] -> [.... . .-.. .-.. --- -.-.-- / .- -. -.-- -... --- -.. -.-- / --- ..- - / - .... . .-. . ..--..]
|
|-
|HELLO -> HELLO TO YOU TOO!
|[.... . .-.. .-.. ---] -> [.... . .-.. .-.. --- / - --- / -.-- --- ..- / - --- --- -.-.--]
|
|-
|HELP -> ENTER IMAGE NUMBER
|[.... . .-.. .--.] -> [. -. - . .-. / .. -- .- --. . / -. ..- -- -... . .-.]
|
|-
|HELP -> YES PLEASE
|[.... . .-.. .--.] -> [-.-- . ... / .--. .-.. . .- ... .]
|
|-
|ES -> QUE
|[. ...] -> [--.- ..- .]
|
|-
|WHAT -> ECHO
|[.-- .... .- -] -> [. -.-. .... ---]
|
|-
|ECHO -> ECHO
|[. -.-. .... ---] -> [. -.-. .... ---]
|
|-
|CHECK -> MATE
|[-.-. .... . -.-. -.-] -> [-- .- - .]
|
|-
|CHECKBOX -> RADIO BUTTON
|[-.-. .... . -.-. -.- -... --- -..-] -> [.-. .- -.. .. --- / -... ..- - - --- -.]
|This also works the other way around.
|-
|E (''repeat n times'') -> E (''repeat n times'')
|[.]
|This only applies for n < 7. Also, n=6 returns 'AAAAAA' instead.
|-
|T (''repeat n times'') -> T (''repeat n times'')
|[-]
|This only applies for n < 7.
|-
|E -> E ''pause'' I -> EIEIO
|[.] -> [.] ''pause'' [..] -> [. .. . .. ---]
|
|-
|I (''repeat n times'') -> I (''repeat n times'')
|[..] -> [..] ''or'' [.. ...-] (IV) ''or'' [...-] (V)
|This only applies for n < 4. n=4 returns 'IV' and n=5 returns 'V', the Roman numerals for 4 and 5, repectively.
|-
|FLIPCOIN -> HEADS ''or'' TAILS
|[..-. .-.. .. .--. -.-. --- .. -.] -> [.... . .- -.. ...] ''or'' [- .- .. .-.. ...]
|
|-
|LOOK AROUND -> NOT ENOUGH POWER
|[.-.. --- --- -.- / .- .-. --- ..- -. -..] -> [-. --- - / . -. --- ..- --. .... / .--. --- .-- . .-.]
|
|-
|SEE -> RED SOIL
|[... . .] -> [.-. . -.. / ... --- .. .-..]
|
|-
|WHO ARE YOU ''or'' WHAT IS YOUR NAME -> SOJOURNER
|[.-- .... --- / .- .-. . / -.-- --- ..-] ''or'' [.-- .... .- - / .. ... / -.-- --- ..- .-. / -. .- -- .] -> [... --- .--- --- ..- .-. -. . .-.]
|
|-
|SOJOURNER -> CFM
|[... --- .--- --- ..- .-. -. . .-.] -> [-.-. ..-. --]
|CFM is short for confirm.
|-
|ET -> PHONE HOME
|[. -] -> [.--. .... --- -. . / .... --- -- .]
|This is a reference to the movie ET.
|-
|LS -> DID YOU MEAN DIR
|[.-.. ...] -> [-.. .. -.. / -.-- --- ..- / -- . .- -. / -.. .. .-.]
|These are both commands for viewing the files in a directory. LS is the traditional method in UNIX, whereas DIR is more associated with MS-DOS/Windows (although it also exists in UNIX).
|-
|DIR -> ENTER IMAGE NUMBER
|[-.. .. .-.] -> [. -. - . .-. / .. -- .- --. . / -. ..- -- -... . .-.]
|This references to the next input. DIR stands for directory.
|-
|(''any number ≤ 2445'') -> (''loads xkcd comic in new tab'')
|
|
|-
|MAKE ME A SANDWICH -> NOT A CHANCE
|[-- .- -.- . / -- . / .- / ... .- -. -.. .-- .. -.-. ....] -> [-. --- - / .- / -.-. .... .- -. -.-. .]
| reference to [https://www.explainxkcd.com/wiki/index.php/149:_Sandwich this Comic]
|-
|SUDO MAKE ME A SANDWICH -> NOT POSSIBLE HERE
|[... ..- -.. --- / -- .- -.- . / -- . / .- / ... .- -. -.. .-- .. -.-. ....] -> [-. --- - / .--. --- ... ... .. -... .-.. . / .... . .-. .]
| reference to [https://www.explainxkcd.com/wiki/index.php/149:_Sandwich this comic]
|-
|I LOVE YOU -> LESS THAN THREE
|[.. / .-.. --- ...- . / -.-- --- ..-] -> [.-.. . ... ... / - .... .- -. / - .... .-. . .]
|"Less than three" represents the less than (<) symbol followed by the number three (3), which together form <3. This is commonly used to represent a heart.
|-
|<nowiki />:) -> :D
|[---... -.--.-] -> [---... -..]
|
|-
|<nowiki />:( -> :C
|[---... -.--.] -> [---... -.-.]
|
|-
|<nowiki />;) -> :O
|[-.-.-. -.--.-] -> [---... ---]
|
|-
|<nowiki />:O -> :X
|[---... ---] -> [---... -..-]
|
|-
|UWU -> OWO
|[..- .-- ..-] -> [--- .-- ---]
|
|-
|OWO -> UWU
|[--- .-- ---] -> [..- .-- ..-]
|
|-
|POG -> YEET
|[.--. --- --.] -> [-.-- . . -]
|
|-
|UNIX -> (''Opens [https://uni.xkcd.com uni.xkcd.com]'')
|[..- -. .. -..-]
|
|-
|GET YE FLASK -> YE WISH! IF THERE WAS A FLASK IN THIS GAME, WE'D KNOW ABOUT IT.
|[--. . - / -.-- . / ..-. .-.. .- ... -.-] -> [-.-- . / .-- .. ... .... -.-.-- / .. ..-. / - .... . .-. . / .-- .- ... / .- / ..-. .-.. .- ... -.- / .. -. / - .... .. ... / --. .- -- . --..-- / .-- . .----. -.. / -.- -. --- .-- / .- -... --- ..- - / .. - .-.-.-]
|
|-
|GET YE FLASK -> YOU CANNOT GET YE FLASK
|[--. . - / -.-- . / ..-. .-.. .- ... -.-] -> [-.-- --- ..- / -.-. .- -. -. --- - / --. . - / -.-- . / ..-. .-.. .- ... -.-]
|This response, as well as the previous one, are references to a recurring joke from {{w|Homestar Runner}}.
|-
|YO -> YO
|[-.-- ---] -> [-.-- ---]
|
|-
|DROP TABLE -> HAHA NO
|[.... .- .... .- / -. ---] -> [.... .- .... .- / -. ---]
|
|-
|WHY -> TO STUDY THE RED PLANET
|[.-- .... -.--] -> [- --- / ... - ..- -.. -.-- / - .... . / .-. . -.. / .--. .-.. .- -. . -]
|
|-
|EAT -> I PHOTOSYNTHESIZE
|[. .- -] -> [.. / .--. .... --- - --- ... -.-- -. - .... . ... .. --.. .]
|
|-
|BATTLE ''or'' FIGHT -> THROW
|[-... .- - - .-.. .] ''or'' [..-. .. --. .... -] -> [- .... .-. --- .--]
|
|-
|START -> DID YOU MEAN START GAME?
|[... - .- .-. -] -> [-.. .. -.. / -.-- --- ..- / -- . .- -. / ... - .- .-. - / --. .- -- . ..--..]
|
|-
|STARTGAME -> CHECK BACK LATER
|[... - .- .-. - --. .- -- .] -> [-.-. .... . -.-. -.- / -... .- -.-. -.- / .-.. .- - . .-.]
|
|}
===Controls===

{| class="wikitable"
! Message & response
! Morse Code
! Explanation
|-
|QUIET -> (turns the volume off)
|[--.- ..- .. . -]
|
|-
|MUTE -> (turns the volume off)
|[-- ..- - .]
|
|-
|BEEP -> (turns the volume on)
|[-... . . .--.]
|
|}
See also QRS and QRQ.

===Q codes and radio shorthand===
An explanation of Q codes can be found {{w|Q code|here}}.

{| class="wikitable"
! Message & response
! Morse Code
! Explanation
|-
|CQ -> CQD DE SOJ
|[-.-. --.-] -> [-.-. --.- -.. / -.. . / ... --- .---]
|
|-
|SOS -> YOU TOO?
|[... --- ...] -> [-.-- --- ..- / - --- --- ..--..]
|
|-
|SOS -> OH NO
|[... --- ...] -> [--- .... / -. ---]
|
|-
|QRS -> (reduces playback speed)
|[--.- .-. ...]
|
|-
|QRQ -> (increases playback speed)
|[--.- .-. --.-]
|
|-
|QRA -> QRA SOJOURNER
|[--.- .-. .-] -> [--.- .-. .- / ... --- .--- --- ..- .-. -. . .-.]
|
|-
|QRB -> QRB 264 MILLION KM
|[--.- .-. -...] -> [--.- .-. -... /..--- -.... ....- / -- .. .-.. .-.. .. --- -. / -.- --]
|
|-
|QRH -> QRH 0.652 METERS
|[--.- .-. ....] -> [--.- .-. .... / ----- .-.-.- -.... ..... ..--- / -- . - . .-. ...]
|
|-
|QRG -> QRG PATHFINDER
|[--.- .-. --.] -> [--.- .-. --. / .--. .- - .... ..-. .. -. -.. . .-.]
|
|-
|QRZ -> QRZ SOJOURNER
|[--.- .-. --..] -> [--.- .-. --.. / ... --- .--- --- ..- .-. -. . .-.]
|
|-
|QRT -> PLEASE DON'T GO
|[--.- .-. -] -> [.--. .-.. . .- ... . / -.. --- -. .----. - / --. ---]
|
|-
|QTH -> QTH ARES VALLIS
|[--.- - ....] -> [--.- - .... / .- .-. . ... / ...- .- .-.. .-.. .. ...]
|
|-
|QSL -> QSL
|[--.- ... .-..] -> [--.- ... .-..]
|
|-
|73 -> 73 KN
|[--... ...--] -> [--... ...-- / -.- -.]
|
|}
===FORTUNE===

{| class="wikitable"
! Message & response
! Morse Code
! Explanation
|-
|F -> DID YOU MEAN FORTUNE
|[..-.] -> [-.. .. -.. / -.-- --- ..- / -- . .- -. / ..-. --- .-. - ..- -. .]
|
|-
|FORTUNE -> OPEN ME
|[..-. --- .-. - ..- -. .]
|
|-
|OPEN -> ''returns one of the following fortunes''

1. A BEAUTIFUL SMART AND LOVING PERSON WILL BE COMING INTO YOUR LIFE

2. CHANGE IS HAPPENING IN YOUR LIFE SO GO WITH THE FLOW

3. COURTESY BEGINS IN THE HOME

4. DILIGENCE AND MODESTY CAN RAISE YOUR SOCIAL STATUS

5. EVERYWHERE YOU CHOOSE TO GO FRIENDLY FACES WILL GREET YOU

6. FOLLOW THE MIDDLE PATH NEITHER EXTREME WILL MAKE YOU HAPPY

7. FOR THE THINGS WE HAVE TO LEARN BEFORE WE CAN DO THEM WE LEARN BY DOING THEM

8. HELP IM BEING HELD PRISONER IN A CHINESE BAKERY

9. LIKE THE RIVER FLOW INTO THE SEA SOMETHING ARE JUST MEANT TO BE

10. MANS MIND ONCE STRETCHED BY A NEW IDEA NEVER REGAINS ITS ORIGINAL DIMENSIONS

11. MEDITATION WITH AN OLD ENEMY IS ADVISED

12. NEVER FEAR THE END OF SOMETHING MARKS THE START OF SOMETHING NEW

13. PERHAPS YOUVE BEEN FOCUSING TOO MUCH ON SAVING

14. SAVOR YOUR FREEDOM IT IS PRECIOUS

15. STAYING CLOSE TO HOME IS GOING TO BE BEST FOR YOUR MORALE TODAY

16. YOU ARE GENEROUS TO AN EXTREME AND ALWAYS THINK OF THE OTHER FELLOW

17. YOU HAVE AN UNUSUAL EQUIPMENT FOR SUCCESS USE IT PROPERLY

18. YOU SHOULD PAY FOR THIS CHECK BE GENEROUS

19. YOU WILL BE A GREAT SUCCESS BOTH IN THE BUSINESS WORLD AND SOCIETY

20. YOUR DREAMS ARE NEVER SILLY DEPEND ON THEM TO GUIDE YOU

21. YOUR INFINITE CAPACITY FOR PATIENCE WILL BE REWARDED SOONER OR LATER

22. YOUR MENTALITY IS ALERT PRACTICAL AND ANALYTICAL

23. YOUR MOODS SIGNAL A PERIOD OF CHANGE

|[--- .--. . -.]

1. [.- / -... . .- ..- - .. ..-. ..- .-.. / ... -- .- .-. - / .- -. -.. / .-.. --- ...- .. -. --. / .--. . .-. ... --- -. / .-- .. .-.. .-.. / -... . / -.-. --- -- .. -. --. / .. -. - --- / -.-- --- ..- .-. / .-.. .. ..-. .]

2. [-.-. .... .- -. --. . / .. ... / .... .- .--. .--. . -. .. -. --. / .. -. / -.-- --- ..- .-. / .-.. .. ..-. . / ... --- / --. --- / .-- .. - .... / - .... . / ..-. .-.. --- .--]

3. [-.-. --- ..- .-. - . ... -.-- / -... . --. .. -. ... / .. -. / - .... . / .... --- -- .]

4. [-.. .. .-.. .. --. . -. -.-. . / .- -. -.. / -- --- -.. . ... - -.-- / -.-. .- -. / .-. .- .. ... . / -.-- --- ..- .-. / ... --- -.-. .. .- .-.. / ... - .- - ..- ...]

5. [. ...- . .-. -.-- .-- .... . .-. . / -.-- --- ..- / -.-. .... --- --- ... . / - --- / --. --- / ..-. .-. .. . -. -.. .-.. -.-- / ..-. .- -.-. . ... / .-- .. .-.. .-.. / --. .-. . . - / -.-- --- ..-]

6. [. ...- . .-. -.-- .-- .... . .-. . / -.-- --- ..- / -.-. .... --- --- ... . / - --- / --. --- / ..-. .-. .. . -. -.. .-.. -.-- / ..-. .- -.-. . ... / .-- .. .-.. .-.. / --. .-. . . - / -.-- --- ..-]

7. [..-. --- .-. / - .... . / - .... .. -. --. ... / .-- . / .... .- ...- . / - --- / .-.. . .- .-. -. / -... . ..-. --- .-. . / .-- . / -.-. .- -. / -.. --- / - .... . -- / .-- . / .-.. . .- .-. -. / -... -.-- / -.. --- .. -. --. / - .... . --]

8. [.... . .-.. .--. / .. -- / -... . .. -. --. / .... . .-.. -.. / .--. .-. .. ... --- -. . .-. / .. -. / .- / -.-. .... .. -. . ... . / -... .- -.- . .-. -.--]

9. [.-.. .. -.- . / - .... . / .-. .. ...- . .-. / ..-. .-.. --- .-- / .. -. - --- / - .... . / ... . .- / ... --- -- . - .... .. -. --. / .- .-. . / .--- ..- ... - / -- . .- -. - / - --- / -... .]

10. [-- .- -. ... / -- .. -. -.. / --- -. -.-. . / ... - .-. . - -.-. .... . -.. / -... -.-- / .- / -. . .-- / .. -.. . .- / -. . ...- . .-. / .-. . --. .- .. -. ... / .. - ... / --- .-. .. --. .. -. .- .-.. / -.. .. -- . -. ... .. --- -. ...]

11. [-- . -.. .. - .- - .. --- -. / .-- .. - .... / .- -. / --- .-.. -.. / . -. . -- -.-- / .. ... / .- -.. ...- .. ... . -..]

12. [-. . ...- . .-. / ..-. . .- .-. / - .... . / . -. -.. / --- ..-. / ... --- -- . - .... .. -. --. / -- .- .-. -.- ... / - .... . / ... - .- .-. - / --- ..-. / ... --- -- . - .... .. -. --. / -. . .--]

13. [.--. . .-. .... .- .--. ... / -.-- --- ..- ...- . / -... . . -. / ..-. --- -.-. ..- ... .. -. --. / - --- --- / -- ..- -.-. .... / --- -. / ... .- ...- .. -. --.]

14. [... .- ...- --- .-. / -.-- --- ..- .-. / ..-. .-. . . -.. --- -- / .. - / .. ... / .--. .-. . -.-. .. --- ..- ...]

15. [... - .- -.-- .. -. --. / -.-. .-.. --- ... . / - --- / .... --- -- . / .. ... / --. --- .. -. --. / - --- / -... . / -... . ... - / ..-. --- .-. / -.-- --- ..- .-. / -- --- .-. .- .-.. . / - --- -.. .- -.--]

16. [-.-- --- ..- / .- .-. . / --. . -. . .-. --- ..- ... / - --- / .- -. / . -..- - .-. . -- . / .- -. -.. / .- .-.. .-- .- -.-- ... / - .... .. -. -.- / --- ..-. / - .... . / --- - .... . .-. / ..-. . .-.. .-.. --- .--]

17. [-.-- --- ..- / .... .- ...- . / .- -. / ..- -. ..- ... ..- .- .-.. / . --.- ..- .. .--. -- . -. - / ..-. --- .-. / ... ..- -.-. -.-. . ... ... / ..- ... . / .. - / .--. .-. --- .--. . .-. .-.. -.--]

18. [-.-- --- ..- / ... .... --- ..- .-.. -.. / .--. .- -.-- / ..-. --- .-. / - .... .. ... / -.-. .... . -.-. -.- / -... . / --. . -. . .-. --- ..- ...]

19. [-.-- --- ..- / .-- .. .-.. .-.. / -... . / .- / --. .-. . .- - / ... ..- -.-. -.-. . ... ... / -... --- - .... / .. -. / - .... . / -... ..- ... .. -. . ... ... / .-- --- .-. .-.. -.. / .- -. -.. / ... --- -.-. .. . - -.--]

20. [-.-- --- ..- .-. / -.. .-. . .- -- ... / .- .-. . / -. . ...- . .-. / ... .. .-.. .-.. -.-- / -.. . .--. . -. -.. / --- -. / - .... . -- / - --- / --. ..- .. -.. . / -.-- --- ..-]

21. [-.-- --- ..- .-. / .. -. ..-. .. -. .. - . / -.-. .- .--. .- -.-. .. - -.-- / ..-. --- .-. / .--. .- - .. . -. -.-. . / .-- .. .-.. .-.. / -... . / .-. . .-- .- .-. -.. . -.. / ... --- --- -. . .-. / --- .-. / .-.. .- - . .-.]

22. [-.-- --- ..- .-. / -- . -. - .- .-.. .. - -.-- / .. ... / .- .-.. . .-. - / .--. .-. .- -.-. - .. -.-. .- .-.. / .- -. -.. / .- -. .- .-.. -.-- - .. -.-. .- .-..]

23. [-.-- --- ..- .-. / -- --- --- -.. ... / ... .. --. -. .- .-.. / .- / .--. . .-. .. --- -.. / --- ..-. / -.-. .... .- -. --. .]

|
|-
|OPEN -> HUH (if after something other than "FORTUNE")
|[--- .--. . -.] -> [.... ..- ....]
|}
===ENCABULATOR===

{| class="wikitable"
! Message & response
! Morse Code
! Explanation
|-
|STATUS -> RADIO ONLINE, MOTOR ONLINE, UNILATERAL PHASE DETRACTOR UNPOWERED, CARDINAL GRAMMETER UNSYNCHRONIZED
|[... - .- - ..- ...] -> [.-. .- -.. .. --- / --- -. .-.. .. -. . --..-- / -- --- - --- .-. / --- -. .-.. .. -. . --..-- / ..- -. .. .-.. .- - . .-. .- .-.. / .--. .... .- ... . / -.. . - .-. .- -.-. - --- .-. / ..- -. .--. --- .-- . .-. . -.. --..-- / -.-. .- .-. -.. .. -. .- .-.. / --. .-. .- -- -- . - . .-. / ..- -. ... -.-- -. -.-. .... .-. --- -. .. --.. . -..]
|
|-
|YOUTUBE -> RXJKDH1KZ0W
|[-.-- --- ..- - ..- -... .]
|This represents the video ID for [https://youtu.be/RXJKdh1KZ0w Rockwell Retro Encabulator]
|-
|REPAIR ''or'' ENCABULATOR ''or'' FIX ''or'' SYSTEM -> ENTERING ENCABULATOR RECOVERY SYSTEM. OPTIONS 1 INITIATE SIDE FUMBLING 2 ALIGN SPURVING BEARINGS 3 REVERSE TREMIE PIPE
:1 -> SIDE FUMBLING DETECTED. MODIAL INTERACTION UNSTABLE. RECOVERY TERMINATED.
:2 -> MODIAL INTERACTION INITIATED. OPTIONS 1 UNWIND LOTUS O DELTOID 2 INCREASE DEPLENERATION 3 CONNECT GIRDLESPRING ON DOWN END OF GRAMMETER 4 CONNECT SEVENTH CONDUCTOR TO GIRDLESPRING
::1 -> SIDE FUMBLING DETECTED. MODIAL INTERACTION UNSTABLE. RECOVERY TERMINATED.
::2 -> DEPLENERATION PREVENTED BY DINGLE ARM
::3 -> SIDE FUMBLING DETECTED. MODIAL INTERACTION UNSTABLE. RECOVERY TERMINATED.
::4 -> PANAMETRIC FAN ACTIVATED. MODIAL INTERACTION STABLE. DEFAULT CONFIGURATION MISSING. MANUALLY ENTER MARZELVANE TYPE TO COMPLETE RECOVERY
:::HYDROCOPTIC -> RECOVERY SUCCESSFUL. REBOOT Y N?
::::Y -> (''Opens [https://imgs.xkcd.com/comics/sojourner_repaired.png sojourner_repaired.png]'')
:3 -> ERROR TREMIE PIPE NONREVERSIBLE
|[.-. . .--. .- .. .-.] ''or'' [. -. -.-. .- -... ..- .-.. .- - --- .-.] ''or'' [..-. .. -..-] ''or'' [... -.-- ... - . --] -> [. -. - . .-. .. -. --. / . -. -.-. .- -... ..- .-.. .- - --- .-. / .-. . -.-. --- ...- . .-. -.-- / ... -.-- ... - . -- .-.-.- / --- .--. - .. --- -. ... / .---- / .. -. .. - .. .- - . / ... .. -.. . / ..-. ..- -- -... .-.. .. -. --. / ..--- / .- .-.. .. --. -. / ... .--. ..- .-. ...- .. -. --. / -... . .- .-. .. -. --. ... / ...-- / .-. . ...- . .-. ... . / - .-. . -- .. . / .--. .. .--. .]
:[.----] -> [... .. -.. . / ..-. ..- -- -... .-.. .. -. --. / -.. . - . -.-. - . -.. .-.-.- / -- --- -.. .. .- .-.. / .. -. - . .-. .- -.-. - .. --- -. / ..- -. ... - .- -... .-.. . .-.-.- / .-. . -.-. --- ...- . .-. -.-- / - . .-. -- .. -. .- - . -.. .-.-.-]
:[..---] -> [-- --- -.. .. .- .-.. / .. -. - . .-. .- -.-. - .. --- -. / .. -. .. - .. .- - . -.. .-.-.- / --- .--. - .. --- -. ... / .---- / ..- -. .-- .. -. -.. / .-.. --- - ..- ... / --- / -.. . .-.. - --- .. -.. / ..--- / .. -. -.-. .-. . .- ... . / -.. . .--. .-.. . -. . .-. .- - .. --- -. / ...-- / -.-. --- -. -. . -.-. - / --. .. .-. -.. .-.. . ... .--. .-. .. -. --. / --- -. / -.. --- .-- -. / . -. -.. / --- ..-. / --. .-. .- -- -- . - . .-. / ....- / -.-. --- -. -. . -.-. - / ... . ...- . -. - .... / -.-. --- -. -.. ..- -.-. - --- .-. / - --- / --. .. .-. -.. .-.. . ... .--. .-. .. -. --.]
::[.----] -> [... .. -.. . / ..-. ..- -- -... .-.. .. -. --. / -.. . - . -.-. - . -.. .-.-.- / -- --- -.. .. .- .-.. / .. -. - . .-. .- -.-. - .. --- -. / ..- -. ... - .- -... .-.. . .-.-.- / .-. . -.-. --- ...- . .-. -.-- / - . .-. -- .. -. .- - . -.. .-.-.-]
::[..---] -> [-.. . .--. .-.. . -. . .-. .- - .. --- -. / .--. .-. . ...- . -. - . -.. / -... -.-- / -.. .. -. --. .-.. . / .- .-. --]
::[...--] -> [... .. -.. . / ..-. ..- -- -... .-.. .. -. --. / -.. . - . -.-. - . -.. .-.-.- / -- --- -.. .. .- .-.. / .. -. - . .-. .- -.-. - .. --- -. / ..- -. ... - .- -... .-.. . .-.-.- / .-. . -.-. --- ...- . .-. -.-- / - . .-. -- .. -. .- - . -.. .-.-.-]
::[....-] -> [.--. .- -. .- -- . - .-. .. -.-. / ..-. .- -. / .- -.-. - .. ...- .- - . -.. .-.-.- / -- --- -.. .. .- .-.. / .. -. - . .-. .- -.-. - .. --- -. / ... - .- -... .-.. . .-.-.- / -.. . ..-. .- ..- .-.. - / -.-. --- -. ..-. .. --. ..- .-. .- - .. --- -. / -- .. ... ... .. -. --. .-.-.- / -- .- -. ..- .- .-.. .-.. -.-- / . -. - . .-. / -- .- .-. --.. . .-.. ...- .- -. . / - -.-- .--. . / - --- / -.-. --- -- .--. .-.. . - . / .-. . -.-. --- ...- . .-. -.--]
:::[.... -.-- -.. .-. --- -.-. --- .--. - .. -.-.] -> [.-. . -.-. --- ...- . .-. -.-- / ... ..- -.-. -.-. . ... ... ..-. ..- .-.. .-.-.- / .-. . -... --- --- - / -.-- / -. ..--..]
::::[-.--]
:[...--] -> [. .-. .-. --- .-. / - .-. . -- .. . / .--. .. .--. . / -. --- -. .-. . ...- . .-. ... .. -... .-.. .]
|
|-
|}

===MAZE===

{| class="wikitable"
! Message & response
! Morse Code
! Explanation
|-
|RETURN -> DID YOU MEAN ENTER
|[.-. . - ..- .-. -.]
|
|-
|ENTER -> DID YOU MEAN ENTER MAZE
|[. -. - . .-.]
|
|-
|ENTER MAZE -> AN EMPTY ROOM
:LOOK -> AN EMPTY ROOM
:HELP -> NORTH EAST SOUTH WEST GET
:EXIT -> CFM (''Exits the maze'')
|[. -. - . .-. / -- .- --.. .] -> [.- -. / . -- .--. - -.-- / .-. --- --- --]
:[.-.. --- --- -.-] -> [.- -. / . -- .--. - -.-- / .-. --- --- --]
:[.... . .-.. .--.] -> [-. --- .-. - .... / . .- ... - / ... --- ..- - .... / .-- . ... - / --. . -]
:[. -..- .. -] -> [-.-. ..-. --]
|
|}
{| class="wikitable"
|+ Maze
|-
|an open flame || a candle on a table || style="background-color: black;" |
|-
| style="background-color: black;" | || an empty room (start) || style="background-color: black;" |
|-
| style="background-color: black;" | || a hanging bell || an open book on a table (locked door)
|-
|}

Steps to complete (directions can be abbreviated as their first letter):
# NORTH
# GET CANDLE -> TAKEN
# WEST
# LIGHT CANDLE
# EAST
# SOUTH
# SOUTH
# RING BELL -> A DOOR OPENS
# EAST
# CLOSE BOOK -> CONGRATULATIONS YOU ESCAPE

===CROSSWORD===
{| class="wikitable"
! Message & response
! Morse Code
! Explanation
|-
|CROSSWORD -> NUMBER AND DIRECTION
|[-.-. .-. --- ... ... .-- --- .-. -..] -> [-. ..- -- -... . .-. / .- -. -.. / -.. .. .-. . -.-. - .. --- -.]
|This starts a crossword. You can ask for hints like "1 down" or "2 across". It appears to be the [https://rexwordpuzzle.blogspot.com/2021/04/libertarian-politico-johnson-thu-4-1-21.html New York Times Crossword] from the day this comic was written (2021-04-01).
|}

{| class="wikitable"
|+Solved Crossword
|-
| m || y || g || o || d || style="background-color: black; | || d || e || v || style="background-color: black; | || style="background-color: black; | || style="background-color: black; | || e || l || f
|-
| b || u || o || n || o || style="background-color: black; | || e || y || e || s || style="background-color: black; | || s || l || u || r
|-
| a || m || o || c || o || style="background-color: black; | || c || r || a || p || style="background-color: black; | || l || m || a || o
|-
| style="background-color: black; | || style="background-color: black; | || v || e || r || y || r || e || l || i || g || i || o || u || s
|-
| s || e || e || style="background-color: black; | || m || u || y || style="background-color: black; | || style="background-color: black; | || r || a || m || style="background-color: black; | || style="background-color: black; | || style="background-color: black; |
|-
| h || a || r || h || a || r || style="background-color: black; | || s || c || a || r || e || d || o || f
|-
| e || s || s || e || n || t || i || a || l || l || y || style="background-color: black; | || a || r || i
|-
| b || t || e || n || style="background-color: black; | || style="background-color: black; | || m || m || i || style="background-color: black; | || style="background-color: black; | || t || v || a || d
|-
| o || l || a || style="background-color: black; | || b || a || d || m || o || u || t || h || i || n || g
|-
| p || a || s || s || e || d || b || y || style="background-color: black; | || n || o || o || d || g || e
|-
| style="background-color: black; | || style="background-color: black; | || style="background-color: black; | || o || a || r || style="background-color: black; | || style="background-color: black; | || s || u || n || style="background-color: black; | || l || e || t
|-
| b || l || e || n || d || e || d || f || a || m || i || l || y || style="background-color: black; | || style="background-color: black; |
|-
| b || o || r || g || style="background-color: black; | || p || e || l || t || style="background-color: black; | || g || e || n || r || e
|-
| q || u || i || z || style="background-color: black; | || s || p || a || y || style="background-color: black; | || h || i || c || k || s
|-
| s || t || e || style="background-color: black; | || style="background-color: black; | || style="background-color: black; | || p || b || r || style="background-color: black; | || t || a || h || o || e
|}

{| class="wikitable mw-collapsible mw-collapsed"
|+ Words
! index !! down word !! across word
|-
| 1 || MBA || MYGOD
|-
| 2 || YUM ||
|-
| 3 || GOOVERSEAS ||
|-
| 4 || ONCE ||
|-
| 5 || DOORMAN ||
|-
| 6 || DECRY || DEV
|-
| 7 || EYRE ||
|-
| 8 || VEAL ||
|-
| 9 || ELMO || ELF
|-
| 10 || LUAU ||
|-
| 11 || FROS ||
|-
| 12 || || BUONO
|-
| 13 || || EYES
|-
| 14 || SPIRAL ||
|-
| 15 || SLIME || SLUR
|-
| 16 || || AMOCO
|-
| 17 || || CRAP
|-
| 18 || || LMAO
|-
| 19 || || VERYRELIGIOUS
|-
| 20 || YURT ||
|-
| 21 || GARY ||
|-
| 22 || SHEBOP || SEE
|-
| 23 || EASTLA ||
|-
| 24 || || MUY
|-
| 25 || || RAM
|-
| 26 || || HARHAR
|-
| 27 || HEN ||
|-
| 28 || SAMMY || SCAREDOF
|-
| 29 || CLIO ||
|-
| 30 || DAVIDLYNCH ||
|-
| 31 || ORANGE ||
|-
| 32 || FIDGET ||
|-
| 33 || || ESSENTIALLY
|-
| 34 || IMDB ||
|-
| 35 || || ARI
|-
| 36 || || BTEN
|-
| 37 || || MMI
|-
| 38 || THO || TVAD
|-
| 39 || || OLA
|-
| 40 || BEAD || BADMOUTHING
|-
| 41 || ADREPS ||
|-
| 42 || UNUM ||
|-
| 43 || TONIGHT ||
|-
| 44 || || PASSEDBY
|-
| 45 || SONGZ ||
|-
| 46 || || NOODGE
|-
| 47 || || OAR
|-
| 48 || SATYR || SUN
|-
| 49 || || LET
|-
| 50 || BBQS || BLENDEDFAMILY
|-
| 51 || LOUT ||
|-
| 52 || ERIE ||
|-
| 53 || DEPP ||
|-
| 54 || FLAB ||
|-
| 55 || LEIA ||
|-
| 56 || || BORG
|-
| 57 || || PELT
|-
| 58 || || GENRE
|-
| 59 || RKO ||
|-
| 60 || ESE ||
|-
| 61 || || QUIZ
|-
| 62 || || SPAY
|-
| 63 || || HICKS
|-
| 64 || || STE
|-
| 65 || || PBR
|-
| 66 || || TAHOE
|}

===Rover Scene===
After successfully repairing and rebooting Sojourner, a comic is opened which depicts it seeking out and finding its friends, Spirit, Opportunity, Curiosity, Perseverance, and Ingenuity. Curiosity and Perseverance are locked in a swordfight, and either Spirit or Opportunity is carried off by Ingenuity while the other speeds off a small mound of dirt. Ingenuity carrying a rover is a reference to the previous comic.

==Special Console Commands==
The page's JavaScript creates a global object <code>morse</code> with <code>encode</code> and <code>decode</code> methods. From the developer console, it is possible to write <code>morse.encode("A PHRASE")</code>, which will print the Morse code corresponding to the text provided, or <code>morse.decode("... --- ...")</code> which will translate the Morse code to text.

<code>BeepComic.hurryUp()</code> to get the reply immediately in the console.
<code>BeepComic.send(...)</code> to send directly to SOJOURNER.

==Transcript==
:[A small box is in the middle of a large white frame. The box can have a check-mark, but it is alternating between being checked or unchecked. At the bottom right there is a muted speaker (which can be unmuted). If the user press the checkbox gray dots or lines will appear below depending on the length of the press. These will move from right to left and then disappear.]

{{comic discussion}}

[[Category:Interactive comics]]
[[Category:Comics with animation]]
[[Category:Dynamic comics]]
[[Category:April fools' comics]]