Explain xkcd: It's 'cause you're dumb.
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This is a comic! (Original is 1: Barrel - Part 1)
This is the title text!
Title text: This is the title text!


This is text!

This is superscript!

This is subscript!

Bold text!

Italic text!


This is a BIG header![edit]


This is a big, but not as big header![edit]


This is a small header![edit]


This should not qualify as a header[edit]


This is just bold text at this point[edit]


Stop it[edit]


  • List point
    • List Subpoint
      • List SubSubpoint
        • List SubSubSubpoint
          • List SubSubSubSubpoint
            • List SubSubSubSubSubpoint
              • List SubSubSubSubSubSubpoint



The Cake is a Lie

  1. Number 1
    1. Number 1.1
      1. Number 1.1.1
      2. Number 1.1.2
        1. Number
  2. Number 2


From 2848: Breaker Box:

Label next to breaker Explanation Note
Left column of switches
Kitchen lights The lights in the kitchen. Standard items that could be separate
Living room lights The lights in the living room.
Porch lights The lights on the porch.
Bathroom lights and one surprise mystery outlet somewhere The lights in the bathroom, but also a random outlet.

It is not uncommon for the power supplies to bathrooms (and other rooms with water connections) to be on a separate circuit. This is because water can potentially cause a short circuit, resulting in the breaker opening, and separate circuits minimize the impact and makes the problem easier to locate.

Having initially reserved an output from the box for such a limited use, it is possible that another electrician – while adding wiring – chooses to wire seemingly unrelated things into the same circuit. This may make sense (for example, an outlet near a non-bathroom sink or some other water source could reasonably be grouped with the bathroom), or it may simply be out of convenience from how long the wires needed to run (such as an outlet in the room adjacent to the bathroom). In either case, future residents and installers may not be informed of this, and therefore wouldn't realize that the outlet is grouped with that circuit.

Standard, but 'kludged'
North-facing appliances Peculiar and a bit complex to execute. Here's how it might have been set up:
  1. Install a breaker switch that is actually a mechanical switch to control a smart home automation instead of its normal function
  2. Replace relevant normal outlets with Wi-Fi-controlled smart outlets
  3. Use smart home software to create a custom group of all outlets that control all north-facing appliances
  4. Set up a software automation to selectively toggle this user-defined group of smart outlets when triggered.
  • Adding a matching appliance to the house would require editing the automation.

Alternative explanations:

  • The switch may be physically wired only to outlets installed on a southern wall in the property (or all southern walls, for each room that requires them), and you'd ensure that everything connected to these exclusively north-facing outlets also faces directly away from the wall(s).
  • The switch could control appliances on the north-facing walls of the house.

Note: "North-facing" has broad interpretation, as lax as northeast to northwest or as strict as north by east to north by west. It could also be as exact as perfect north, but this would render this breaker completely functionless unless an appliance happens to be ever-so-perfectly aligned.

From 1461: Payloads:

Spacecraft mass
Spacecraft Launch date ISO 8601 Mass (horses) Mass (kg)
Sputnik[1] 1957-10-04 2 Dogs 83.6
Vanguard 1[2] 1958-03-17 Squirrel 1.47
Pioneer 5[3] 1960-03-11 Large Dog 43
Venera 1[4] 1961-02-12 1 643.5
Mariner 2[5] 1962-08-27 3 Dogs 202.8
Apollo[6] 1964-05-28 67 30,329
Venera 7[7] 1970-08-17 3 1,180
Pioneer 10[8] 1972-03-03 7 Dogs 258.8
Launch vehicle capacity
Spacecraft Launch date ISO 8601 Payload (horses) Payload (kg)
Sputnik Launcher[9] 1957-10-04 1 500
Thor 1958-04-24 3 Dogs 120
Mercury-Atlas 1960-07-29 3 1,360
Saturn I 1961-10-27 20 9,070
Proton-K[10] 1967-03-10? 44 19,760
Atlas-Centaur[11] 1962-05-08 8 Centaurs 3,630
Titan IIIA 1964-09-01 7 3,100
Saturn IB 1966-02-26 45 21,000

Tables AND math!

From 2295: Garbage Math:

Formula as shown Resulting uncertainty Explanation
Precise number + Precise number = Slightly less precise number \mathop\sigma(X+Y)=\sqrt{\mathop\sigma(X)^2+\mathop\sigma(Y)^2} If we know absolute error bars, then adding two precise numbers will at worst add the sizes of the two error bars. For example, if our precise numbers are 1 (±10-6) and 1 (±10-6), then our sum is 2 (±2·10-6). It is possible to lose a lot of relative precision, if the resultant sum is close to zero as a result of adding a number to its approximate negation, a phenomenon known as catastrophic cancellation. Therefore, both of the numbers must be positive for the stated assertion to be true.
Precise number × Precise number = Slightly less precise number \mathop\sigma(X\times Y)\cong

\sqrt{\mathop\sigma(X)\times Y^2+\mathop\sigma(Y)\times X^2}
Here, instead of absolute error, relative error will be added. For example, if our precise numbers are 1 (±10-6) and 1 (±10-6), then our product is 1 (±2·10-6).
Precise number + Garbage = Garbage \mathop\sigma(X+Y)=\sqrt{\mathop\sigma(X)^2+\mathop\sigma(Y)^2} If one of the numbers has a high absolute error, and the numbers being added are of comparable size, then this error will be propagated to the sum.
Precise number × Garbage = Garbage \mathop\sigma(X\times Y)\cong

\sqrt{\mathop\sigma(X)\times Y^2+\mathop\sigma(Y)\times X^2}
Likewise, if one of the numbers has a high relative error, then this error will be propagated to the product. Here, this is independent of the sizes of the numbers.

From 1047: Approximations

Thing to be approximated: Formula proposed Resulting approximate value Correct value Discussion
Avogadro's number 69^{\pi^\sqrt{5}} 6.02191201246329 × 1023 6.02214129 × 1023 Also called a mole for shorthand, Avogadro's number is (roughly) the number of individual atoms in 12 grams of pure carbon. Used in basically every application of chemistry. In 2019 the constant was redefined to 6.02214076 × 1023, making the Approximation slightly more correct.
Gravitational constant G \frac {1} {e ^ {(\pi-1)^{(\pi+1)}}} 6.6736110685 × 10−11 6.67385 × 10−11 The universal gravitational constant G is equal to Fr2/Mm, where F is the gravitational force between two objects, r is the distance between them, and M and m are their masses.
R (gas constant) (e + 1) \sqrt 5 8.3143309279 8.3144622 The gas constant relates energy to temperature in physics, as well as a gas's volume, pressure, temperature and molar amount (hence the name).
Proton–electron mass ratio 6 \pi^5 1836.1181087117 1836.15267246 The proton-to-electron mass ratio is the ratio between the rest mass of the proton divided by the rest mass of the electron.

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Wow! This is a discussion page! someone, i guess(talk i guess|le edit list) 17:57, 2 November 2023 (UTC)

Indeed it is! someone, i guess(talk i guess|le edit list) 17:57, 2 November 2023 (UTC)

This is a new topic![edit]

wait no it isnt what are you on about someone, i guess(talk i guess|le edit list) 17:57, 2 November 2023 (UTC)

Friendly reminder you can actually chat here[edit]

Always helps to get more cases thrown into here someone, i guess(talk i guess|le edit list) 15:42, 6 November 2023 (UTC)

um hi Arandomperson (talk) 09:21, 10 November 2023 (UTC)