explain xkcd - User contributions [en]

2097: Thor Tools

2020-06-19T14:42:16Z

172.69.70.117:

{{comic
| number = 2097
| date = January 11, 2019
| title = Thor Tools
| image = thor_tools.png
| titletext = CORRECTION: After careful evaluation, we have determined that the axis label on this chart was printed backward.
}}

==Explanation==

In Norse mythology, {{w|Thor}} is the name of a god of thunder and lightning. His signature weapon is a magic hammer called {{w|Mjölnir}}. In popular culture Thor might be best known for his role in {{w|Thor (Marvel Comics)|Marvel comics and films}}, which his appearance here seems to be referencing. In the Marvel Cinematic Universe movie, Avengers: Infinity War, Thor also wields an axe named Stormbreaker.

Although this hammer was historically a weapon, this comic interprets it as it would more commonly be interpeted today -- as a tool. The comic is listing various hand tools in order of utility and viability as Thor's weapon, besides his actual, enchanted hammer. Hammers are heavy, blunt, and can do large amounts of damage to an opponent, whereas a hand plane is sharp, but only in one place, and will only inflict surface wounds.

Some of these tools require power, which would generally require Thor to stay near an outlet or keep a battery charging, such as the circular saw, or Dremel. However, being the god of lightning may allow him to circumvent this, by producing electricity for the direct current (D.C.) tools, although he would need an inverter to convert the lightning (D.C.) to alternating current (A.C.) for the tools requiring it. Thor would also need compressed air for the nail gun or jackhammer, only allowing Thor so many shots before reloading the air tank at an outlet, or via a concentrated wind storm.

The nail gun and staple gun would also require nails or staples respectively to function as a weapon. Although Mjölnir is believed to return to Thor if thrown, it's not clear how a similar system could work with nails and staples.

The usefulness of the nail gun as a weapon might depend on whether it was an older one that can be bump-fired or a newer one that requires a separate trigger pull for each nail.

In the title text, [[Randall]] writes that the order of the axis label should be reversed, making the plane the best tool and Mjölnir the worst. Considering that the title of the comic is "Thor Tools" ("tools", instead of "weapons"), the argument seems to be that a hammer is less useful than the rest, by seeing them as tools and not as weapons.

A few other interpretations of this could be:
* Randall proposes that Thor armed with a plane or digital calipers would be much more fearsome than with a hammer.
* The "value" of the more strange-seeming items would be much higher than his traditional hammer, perhaps more gory or more humorous.
* Thor tends to cause collateral damage, and would cause less with a plane or calipers.
* "Best" and "worst" are to be interpreted for Thor's enemies rather than Thor himself.
* Randall might just find the idea of Thor wielding a Plane as a weapon to be really funny.

The title may be a reference to Gary Larson's ''The Far Side'' comic, ''Cow Tools''.

===List of tools===

All shown tools are explained below:
;Hammer
:A {{w|hammer}} ''is a tool consisting of a weighted "head" fixed to a long handle that is swung to deliver an impact to a small area of an object''. Thor was a hammer-wielding god and produced the lighting by using this tool. A {{w|war hammer}} was an actual blunt weapon used for combat in medieval times, and is the original Thor's attribute. There exists a variety of craftsman's hammers designed for specific purposes which can be used as weapons of opportunity to various degrees, depending on the tool's size, weight and material.
;Axe
:An {{w|axe}} or just ax is another old human tool used to split and cut wood, but it also was used as a dangerous weapon in the medieval times. The battle-axes of old were of considerably different design than the woodworking ones, being lighter and having thinner and wider blades. A woodworking axe, though not designed for combat, could be a formidable weapon of opportunity. Notably, this tool is placed slightly below the hammer, possibly indicating Randall's thoughts on Thor's axe, 'Stormbreaker' which features in the Marvel films. (Note: In Norse mythology Thor is depicted exclusively with a hammer rather than an axe).
;Claw hammer
:A {{w|claw hammer}} is a hammer tool primarily used for driving nails into other objects, but also for pulling nails from them. This item seems a bit redundant in the presence of a general hammer on the axis, but could be seen as more scary because it has a pointed, curved and split back head (used for pulling nails). In fact, the usefulness of its back head for combat is debatable at least. On the other hand, it is smaller and lighter than some other craftman's hammers, and less scary than a true war hammer, so its place on the axis may be justified.
;Circular saw
:A {{w|circular saw}} is using a, mostly electric powered, fast-revolving toothed disc to cut materials. A stationary version is called a ''table saw'' but the figure of Thor drawn above presents him using a lighter hand-held version making a buzzing sound. Since the power of the saw is far beyond the human power it is quite a dangerous tool and could be fatal to the user himself. However, it would be rather unwieldy in combat, as it is quite heavy and bulky. Also, electric circular saw would be limited by its cord length, however cordless (battery-operated) saws exist today. This item could be a mock reference to a common trope in horror movies or computer games, when a {{w|chainsaw}} (not a circular saw) is used a weapon.
;Shovel
:A {{w|shovel}} is also a historic tool. It can be used to dig into the ground, move snow or dirt, harvest, and much more. Because it has a relatively thin, sharp metal blade at the end of a pole, it can be used as a weapon of opportunity. Indeed, a small (sometimes foldable), sturdy {{w|Entrenching tool|spade}} was and still is a standard issue item for an infantryman in some countries, intended mainly for entrenching work, but also usable as a weapon – and the soldiers are trained to use it as such, sometimes to a high skill, specifically among special forces. It is rumored that Russian Spetznaz operators are specifically trained to use their spades as throwing weapons. It is therefore more useful in combat than a circular saw – but may be seen as less scary.
;Jackhammer
:A {{w|jackhammer}} is a power tool used to drill and crush hard but brittle materials like stone, concrete etc. It has heavy body with a protruding shaft that makes hard and rapid back-and-forth (and optionally also rotary) movements that drive an implement (a drill, a chisel etc.) into the worked material. Like the circular saw jackhammer is a tool that is powered far beyond single human capabilities. Most jackhammers are very heavy and can be reasonably used only in a facing-down position to work on floors, pavements and other near-horizontal surfaces, nullifying combat application. However, since Thor is purportedly very strong, he may be able to hold it horizontally for some combat...
;Socket wrench
:A handle attached to a {{w|socket wrench}} is mostly used to tighten bolts or nuts. But since it is quite heavy and resembles a hammer it could also be used in a similar fashion. It may be a self-reference to [[538: Security|comic 538]].
;Bolt cutters
:{{w|Bolt cutters}} are cutters with very long handles, typically 2 or 3 feet long, and comparatively tiny jaws. The length of the handles provides the user enough mechanical advantage to sheer through things like bolts, chain links, and lock shackles. Although this tool can cut some fairly tough objects, its usefulness in combat is limited – as far as the cutting action goes at least. On the other hand they are quite heavy and can be used as a blunt weapon.
;Hacksaw
:A {{w|hacksaw}} is a type of hand saw with very small teeth. Hacksaws are well suited to cutting materials like metal and plastic, where the larger teeth of a wood saw would tend to bind or damage the material around the cut. Hacksaw blades are fairly unlikely to seriously injure people, though a hacksaw may be useful against metal baddies like Ultron.
;Nail gun
:A {{w|nail gun}} is a tool for driving nails or other fasteners into various materials ranging from soft wood to hard concrete by a single powerful "shot" to the nail being driven. There are models powered by compressed air, electricity (several types of mechanisms) or explosive charges similar to firearm ammunition (most often compatible with {{w|.22 Short}} blank cartridges). They are normally used by slightly pushing the "nozzle" against an object, disengaging a safety nose contact mechanism, and pulling the trigger. These are quite dangerous tools and can be potentially modified – by removing safety mechanisms – to act similarly to a handgun, shooting nails as high-speed projectiles. Its place in the middle of the axis seems not right compared to the work hazard level of other tools placed left of it. If safety mechanisms are left intact, a nail gun would need to be used in close combat by pressing it against an opponent which would make it difficult to apply, but if applied successfully it would inflict grievous wounds.
;Staple gun
: A {{w|staple gun}} is a tool used to drive {{w|Staple (fastener)|staples}} (C-shaped pieces of hard wire) into relatively soft materials such as wood, plastics and light masonry in order to fix something to them. There exist spring-loaded hand-operated staple guns as well as power ones utilizing either electricity or compressed air. The power discharged during staple action is a lot less than that of a nail gun and would inflict minor skin wounds at most. If one manages to eject a staple into the air (not against an object) it won't travel very far. A figure of Thor is drawn above the axis showing him using a staple gun this way, with staples falling short onto the ground. The gun held by Thor makes ''kachunk'' sounds characteristic for a spring-loaded version of the tool.
;Coping saw
: A {{w|coping saw}} is a hand saw with a thin replaceable blade and is used to cut curves and shapes in wood or other relatively soft materials. While it could produce a surface wound and draw blood, a person would generally not stand still long enough to be seriously hurt by being sawed at by a coping saw, plus they could bend or break the blade relatively easily.
;Screwdriver (flat)
:A (flat) {{w|screwdriver}} is a metal rod with a handle, flattened and ground at the other end to form a fairly sharp but short edge perpendicular to the rod. It is normally used to drive {{w|Screw|screws}} into a material, by putting the edge into a groove on the screw's head and turning it while pressing firmly. It is not very dangerous normally, but many people have cut their fingers while driving screws in, or sometimes [[1474: Screws|whilst using it incorrectly to unscrew a bolt]]. It could potentially be used as a stabbing weapon similarly to a dagger, but much less effectively, or alternatively the heavy handle may be used as a bludgeon, though the smooth rod would be difficult to grip. Some nations seem to regard it so much dangerous as to ban its possession in public along knives.
;Ball-peen hammer
: Like a regular hammer, a {{w|Ball-peen hammer|ball-peen hammer}} has a flat head designed to hammer things like nail. However instead of the "claw" a regular carpenter's hammer has to pull out nails, it has a second head that is shaped like a ball and which is used to bang surfaces such as sheet metal directly. A ball-peen hammer is probably the smallest of traditional hammers, and usually used for more delicate work. Thor's Hammer has two flat surfaces for pounding (no claw), so a ball peen might be like a smaller Thor's Hammer and could be pretty deadly in his hands. The ball part would probably not be any more or less effective than the flat part, except it might bounce or deflect off some surfaces where a flat one might not.
;Screwdriver (Phillips)
:Similar to a flat screwdriver, but with a cross-shaped tip, designed to drive screws with matching cross-shaped heads. While a Phillips screwdriver could potentially be used as an improvised weapon to stab or strike like a flat screwdriver, the blunter, cross shape is less likely to inflict cutting injury, likely leading to its lower position on the list.
;Awl
:An {{w|Stitching awl|awl}} is a hand tool, basically a rather short, thin, sharp (sometimes curved) spike with a handle. It is used for punching holes through soft material (leather, fabrics) or to {{w|Scratch awl|mark points}} or lines on wood or metal to assist further work such as cutting or drilling. In a pinch, it could be used as a stabbing weapon like a dagger, but a screwdriver is more sturdy for such purpose.
;Digital Caliper
:{{w|Digital calipers}} are an instrument for precisely measuring the dimensions of small objects. Typically, digital calipers can measure inner diameters, outer diameters, and depth. The reason they are considered more formidable than Dremels and planes is likely how surprisingly sharp the calipers are. They need to be sharp to make accurate measurements, but it is not uncommon for people to cut themselves while using a digital caliper.
;Dremel
:Dremel is a brand name (often used in a generic sense) of small {{w|Die grinder|rotary power tools}} that can be used in precise work involving small objects such as engraving, milling, drilling, grinding, cutting, polishing etc. It consists of a relatively small and lightweight body housing a high-speed electric motor driving a shaft equipped with a {{w|Chuck (engineering)|chuck}}. Various implements can be fixed to the chuck – drills, milling cutters of various shapes, small cutting disks, grinding stones, brushes, soft polishing disks etc. Typically the tool is used handheld against an object held in a vice. It can also be mounted in a stand with a {{w|flexible shaft}} attached, at the other end of which an implement is fixed in a chuck, allowing for still more precise work. A Dremel would be rather useless in combat, effecting in superficial wounds only. It could be seen as a baby circular saw, therefore much less scary and placed much more to the right of the scale. However, it is still a heavy object with a firm grip, and could plausibly be wielded as a bludgeon, making it slightly more effective than a plane.
;Plane
:A {{w|Plane_(tool)|hand plane}} is a tool for shaping wood using muscle power to force the cutting blade over the wood surface. It is designed to scrape layers of wood off the surface. While a plane does have a sharp edge and can cause painful injuries if misused, its awkward shape and the small size of the cutting edge would make it impractical to wield and nearly useless as a combat weapon, even for bludgeoning. A hand plane could plausibly be used as a particularly brutal ''torture'' device on a restrained victim, but as Thor is typically depicted as an honorable and heroic character it is unlikely that he would use one in this manner.

==Transcript==

:[A wide image is shown in a single frame.]
:Hand tools Thor could have ended up with
:[Below is a small centered horizontal line with arrows at both ends, labeled "Best" to the left and "Worst" on the right.]

:[The rest of the image shows an other horizontal line in the middle, also with arrows at both ends, covering the full width. Items are marked by a dot with a text above or below, and sometimes a figure wearing a winged helmet, above the line, uses a tool mentioned below:]
:Hammer
:Axe
:Claw hammer
:Circular saw
:[Above, the winged helmet guy uses a circular saw:]
:''Bzzzz zzzz''
:Shovel
:Jackhammer
:Socket wrench
:[Above, the winged helmet guy spins the socket of a socket wrench with a tiny sound.]
:Bolt cutters
:Hacksaw
:Nail gun
:Staple gun
:[Above, the winged helmet guy fires staples into the ground in front of him:]
:''Kachunk kachunk''
:Coping saw
:Screwdriver (flat)
:Ball-peen hammer
:Screwdriver (Phillips)
:Awl
:Digital Caliper
:Dremel
:[Above, the winged helmet guy shows a running Dremel to the left:]
:''Bzzzzz''
:Plane

{{comic discussion}}

2104: Biff Tannen

2020-06-19T14:39:07Z

172.69.70.117:

{{comic
| number = 2104
| date = January 28, 2019
| title = Biff Tannen
| image = biff_tannen.png
| titletext = I can't help myself; now I want to read a bunch of thinkpieces from newspapers in Biff's 1985 arguing over whether the growth of the region into a corporate dystopia was inevitable.
}}

==Explanation==
Cueball is expounding a theory to White Hat regarding the alternate timeline seen in the movie ''{{w|Back to the Future II}}'', in which the character {{w|Biff Tannen}} stole a {{w|DeLorean time machine|time machine}} and used it to travel 60 years into the past to 1955. In that timeline, Future Biff gave his younger self a [https://backtothefuture.fandom.com/wiki/Grays_Sports_Almanac sports almanac] containing 50 years of outcomes of sporting events, which enabled his younger self to earn millions from betting on {{w|horse races}}. The end result of this is that the now-altered present of 1985 has become a corporate dystopia due to the actions of the exceedingly wealthy Biff and his company, BiffCo.

Cueball's theory is that the people now living in this dystopian 1985 would never know that their timeline was altered; as far as they are concerned, theirs ''is'' the true timeline. Because of this, they would seek to analyze every detail of Biff Tannen's rise to power, inventing their own theories as to his success and arguing with each other over the supporting evidence.

However, in the third panel, it becomes clear that this has all merely been Cueball's elaborate setup for a bad pun, causing White Hat to voice his disapproval.

;''Back to the Future II''
This comic is based on ''{{w|Back to the Future II}}''. In this movie, the character {{w|Biff Tannen}} steals the {{w|DeLorean time machine|time machine}}, which is the main plot device, and uses it to go back in time from 2015 to 1955. He then gives Marty McFly’s [https://backtothefuture.fandom.com/wiki/Grays_Sports_Almanac sports almanac], containing the outcomes of 50 years (1950–2000) worth of sporting events, to his own younger self. His younger self uses this sports almanac to make millions by successfully betting on {{w|horse races}}. He then forms a company, and calls it [https://backtothefuture.fandom.com/wiki/BiffCo BiffCo]. In the movie, the protagonists reverse this, by going back to 1955 and stealing the almanac back soon after Biff delivered it. It is heavily implied that the universe where BiffCo exists, also called “[https://backtothefuture.fandom.com/wiki/1985A 1985A]” in the movie, stops existing after this change, since the Biff from 1985A tries to kill Marty to stop him from doing this. However, [[Cueball]] imagines the 1985A timeline as continuing to exist in parallel, rather than being destroyed by the almanac heist as the movie seems to imply. This is consistent with the {{w|multiverse}} theory.

The movie is set in the fictional town of {{w|Hill Valley (Back to the Future)|Hill Valley, California}}. When the protagonists return to 1985, they find that Biff has turned the town’s “Courthouse Square” into a 27-story casino, and generally taken over Hill Valley. This has apparently resulted in the town being overrun by armed gangs, and beset by crime, violence, corruption, and an overall atmosphere of quasi-dystopian misery. This is what Cueball refers to as “the decline of the city, and general social decay”.

;Counterfactuals
Cueball mentions that this universe – that is, the 1985A ''Back to the Future'' timeline – would not have any ''counterfactuals'' to work with. This is often short, in {{w|epistemology}}, for {{w|counterfactual conditionals}}, that is, conditional statements about what ''would'' be true if something ''were'' true that we know for a fact is not true. Randall’s “[[what if?]]” series is based on counterfactuals, since it explores hypotheticals—conditionals which are contrary to fact. For example, the first “what if?” post, about what would happen if you tried to hit a baseball that was thrown at 90% the speed of light, is a counterfactual, because we know for a fact that a baseball has never been thrown at such a speed{{Citation needed}}. In the case of the 1985A universe, they would not have any information on the ''counterfactuals'', that is, the facts about [https://backtothefuture.fandom.com/wiki/Timeline_1 what would happen] if Biff did not have this almanac.

;''Hillbilly Elegy''
''[https://en.wikipedia.org/wiki/Hillbilly_Elegy Hillbilly Elegy: A Memoir of a Family and Culture in Crisis]'' is a book, published in June 2016, that gives an account of growing up in a poor {{w|Rust Belt}} town, and gives a broader, probing look at the struggles of America’s white working class. This comic is a play on the title of this book, which has been described as explaining the “social, regional, and class” issues in white working-class America. The white American working class was a key factor in the {{w|2016 United States presidential election|election}} of U.S. President Donald Trump, and many critics have interpreted the book as an explanation of his election, which was deemed improbable by many analysts before it happened. {{w|Netflix}} had [https://deadline.com/2019/01/netflix-hillbilly-elegy-ron-howard-movie-deal-40m-1202541118/ purchased the rights] to an upcoming film adaptation of the book three days before this comic, prompting another wave of criticism of the book’s theories.

Cueball is proposing a similarly-titled book, set in the ''Back to the Future II'' 1985A timeline, that would describe the supposed factors leading to the rise of Biff Tannen in Hill Valley. In that universe, while the rise of Biff—and the subsequent decay of the city—is the result of his using a future sports almanac to cheat at sports betting, the rest of the population would have to guess at the structural societal issues that might have caused Biff’s otherwise inexplicable success. Thus, Cueball compares such blind guessing with the analysis contained in ''Hillbilly Elegy''.

;White Hat’s reaction
This makes [[White Hat]] angry. This may be for various reasons:

*Because it’s such a painfully long setup for a really stupid pun.
*There is a decent chance that the book White Hat is currently reading is ''Hillbilly Elegy''. If he is enjoying it, this would make the joke more insulting to him, as it compares the book to useless theorizing about an event which was really caused by {{w|Time travel|time traveling}}.
*After seeing the similarity alluded to by Cueball between our current reality and a reality where the book ''Hill Valley Elegy'' is written, he might imagine that we may be living in a world where Trump’s election was {{w|Determinism|predetermined}}, just as Biff’s rise to power was predetermined by time travel. If he opposes Donald Trump politically, it would probably frustrate him to imagine that being optimistic for the future would be in vain, as any social change he might hope for may be simply predetermined not to happen, perhaps by time travelers.

;Relationship to political events
[[Randall]] is known to have [[1756: I'm With Her|supported Hillary Clinton]], the main opponent of Donald Trump, in the 2016 U.S. presidential election, having made a comic just to promote her. This may add to explaining the comic in the following ways:

*Randall may have made this comic as an insult to a book which supposedly explains the election of the candidate he opposed, by comparing it to useless (and wrong) theorizing.
*The comic may be intended as an insult to Trump himself, by comparing the {{w|Dystopia|dystopian}} 1985A universe, where Biff rose to power (albeit not as President) to the actual universe, where Trump was elected to the presidency.
*The comic may be an allusion to {{w|Russian interference in the 2016 United States elections|alleged Russian tampering}} of the 2016 U.S. elections: Randall may be proposing that it is futile to attribute Donald Trump’s rise to power to any set of structural societal issues, that may have acted indirectly, while ignoring the hidden, speculated, but far more direct cause of foul play, just as it would be futile to analyze Biff Tannen’s rise to power by similar means, ignoring the impact of foul play via time travel and a sports almanac.

The title text continues the comparison to the election situation by mentioning thinkpieces from newspapers that would appear in the ''Back to the Future II'' 1985A universe where Biff has taken over. Various thinkpieces did appear in real life newspapers in an attempt to explain Trump’s rise to power after his election, and asking whether it was inevitable.

As ''{{w|Back to the Future II}}''’s important [https://backtothefuture.fandom.com/wiki/October_21 October 2015] setting date approached, commentators began noting the similarities between the older version of the character Biff Tannen and then presidential candidate Donald Trump. When the comparison was brought to the attention of the film’s writer, {{w|Bob Gale}}, in an interview, he [https://www.thedailybeast.com/back-to-the-future-writer-biff-tannen-is-based-on-donald-trump# claimed] that elements of Tannen’s personality were actually based on Trump, who was already well known in the late 1980s for his work in real estate and tabloid controversies. Thus, there is a real connection between Biff Tannen and Donald Trump. This supports the comparison between the two made by Randall. That being said, actor {{w|Thomas F. Wilson|Tom Wilson}} has [https://www.youtube.com/watch?v=c4lYCaFx3Og denied] that his performance of the role was in any way based on Trump.

==Transcript==
:[Cueball talks while walking up behind White Hat, who is reading in an armchair.]
:Cueball: You know, in the universe where Biff Tannen took Marty McFly’s sports almanac back in time, the people wouldn’t have any counterfactuals to work with.
:Cueball: Their world would be ''the'' world.

:[In a frame-less panel White Hat turns his head to look at Cueball as he keeps talking.]
:Cueball: They would have spent decades debating which structural problems enabled the rise of BiffCo, the decline of the city, and general social decay.
:Cueball: Everyone would find reasons it confirmed their pet theory.

:[White Hat turns his head back to his book.]
:Cueball: I'm going to write a book set in that universe. I'll call it ''Hill Valley Elegy''.
:White Hat: ... I ''hate'' you.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring White Hat]]
[[Category:Fiction]]
[[Category:Time travel]]
[[Category:Back to the Future]]

Talk:2321: Low-Background Metal

2020-06-18T16:59:40Z

172.69.70.117:

I can't help but notice that the basic premise of this comic is very much like the reason for going back to 1970 in ''Avengers: Endgame'', when they needed more Pym particles for time travel. I wonder if Randall re-watched it again recently? — [[User:KarMann|KarMann]] ([[User talk:KarMann|talk]]) 17:10, 17 June 2020 (UTC)
: Whoa! Spoiler alert! Disney Plus won't have Infinity War until next week. I'm not watching them out of order! [[User:Mathmannix|Mathmannix]] ([[User talk:Mathmannix|talk]]) 12:16, 18 June 2020 (UTC)

Oh, that's new to me, that they use roman ships to get to higher quantities of lead. For Steel they use German ships. after world war I, the german high seas fleet was captured and put under arrest in scottish waters. To not allow the enemy to utilize the ships, they all sank themselfes. {{w|Scuttling_of_the_German_fleet_at_Scapa_Flow|wikisource}} --[[User:Lupo|Lupo]] ([[User talk:Lupo|talk]]) 05:46, 18 June 2020 (UTC)

== Drawing ==

There's one leg of the time-machine missing from the 3rd panel. (or is it the side of a base?) --[[Special:Contributions/162.158.155.126|162.158.155.126]] 19:57, 17 June 2020 (UTC)

== Mined lead ==

Pb-210 (half-life 20.4 years) is a decay product of radon, and thus accumulates everywhere that is exposed to the atmosphere or where radon seeps from the ground. I suspect it could be a contaminant in lead from some lead mines, but wasn't able to find any references [[User:ShadwellNH|ShadwellNH]] ([[User talk:ShadwellNH|talk]]) 20:00, 17 June 2020 (UTC) Paul

== One use only? ==

The way I understand it, the time machine is one-use unless you find other Low-Background Metal. If you find it, you can make more trips. It would appear that the trip is successful.
--[[Special:Contributions/188.114.103.129|188.114.103.129]] 01:31, 18 June 2020 (UTC)

So you'd say a car is also one-use, unless you find a gas station? [[Special:Contributions/162.158.158.167|162.158.158.167]] 08:51, 18 June 2020 (UTC)
: No, but if the parts it was made of had to be replaced after every trip, I definitely would. [[Special:Contributions/172.69.70.117|172.69.70.117]] 16:59, 18 June 2020 (UTC)

== Real life use of this lead? ==

Does anyone know whether there is any truth whatsoever to scientists using lead from sunken ships to shield delicate equipment? Obviously not time machines, but there are some pieces of equipment that might be sensitive to radiation.

Also, would lead that was in the ocean actually be safer from nuclear fallout than lead that was underground and mined after the nuclear testing ended? [[Special:Contributions/108.162.216.172|108.162.216.172]] 03:31, 18 June 2020 (UTC)
: Yes. At least it is done with steel. [https://hackaday.com/2017/03/27/low-background-steel-so-hot-right-now/][https://www.good.is/articles/the-search-for-low-background-steel][https://www.stainless-steel-world.net/mobile/webarticles/joanne-mcintyre/disappearing-warships-scavengers-raid-war-graves-for-low-background-steel.html] [[Special:Contributions/172.69.33.129|172.69.33.129]] 04:50, 18 June 2020 (UTC)

: Low Background Lead is also used, mentioned in the Good article. The equipment that need this stuff is mostly radiation sensors, very precise ones that can detect even smallest amounts of radiation. And for the last Question, you can't find pure natural lead, its mostly contaminated with radioactive elements (most lead in the universe results from decay chains). And common lead is made through recycling. Ancient lead from roman ships had enough time for the radioactive elements to decay into stable lead. --[[Special:Contributions/141.101.105.114|141.101.105.114]] 06:12, 18 June 2020 (UTC)

== May be complicated ==

The 1968 Story [https://scifi.stackexchange.com/questions/109243/modern-military-jet-goes-back-to-world-war-i Hawk among Sparrows] discusses the problems modern war hardware may have when used against old tech. -- [[Special:Contributions/141.101.76.82|141.101.76.82]] 07:39, 18 June 2020 (UTC)
: This was also part of the premise of the 1980 movie "Final Countdown", when the aircraft carrier Nimitz shows up in the Pacific Ocean on December 6, 1941. [[User:Nutster|Nutster]] ([[User talk:Nutster|talk]]) 13:38, 18 June 2020 (UTC)