[HN Gopher] Divers Accidentally Find a Piece of the Challenger S...
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Divers Accidentally Find a Piece of the Challenger Space Shuttle
 
Author : Errorcod3
Score  : 89 points
Date   : 2022-11-15 17:56 UTC (5 hours ago)
 
web link (www.smithsonianmag.com)
w3m dump (www.smithsonianmag.com)
 
| wwwtyro wrote:
| The odds of this seem astronomically small.
 
  | vikingerik wrote:
  | The odds of _this_ group of people, on _this_ day, finding
  | _this_ piece of the shuttle, are of course astronomically
  | small.
  | 
  | The odds of _some_ group out of millions of people, on _some_
  | day out of ten thousand since the incident, finding _some_
  | piece of debris out of thousands, are considerably higher.
  | 
  | This is the multiple-endpoints fallacy. You only notice the
  | events that happened after the fact, you never notice
  | everything that doesn't happen.
 
  | bombcar wrote:
  | It's a million to one.
  | 
  | And those happen 9 times out of ten.
 
  | Eleison23 wrote:
  | THE ODDS ARE *NEVER* IN OUR FAVOR
 
  | yamtaddle wrote:
  | Once in a blue moon, for sure.
 
  | emptybits wrote:
  | No kidding. Actually, considering how mindblowingly huge but
  | untouched the volume and area of our seas and seafloors are,
  | "oceanically unlikely" is also a superlative I can get behind!
  | 
  | 1.3 billion cubic km of water, the tallest mountain ranges and
  | deepest canyons. Aside from occasional glimpses of the surface,
  | it's forever out of sight and out of mind for nearly every
  | person on the planet.
 
  | UniverseHacker wrote:
  | Counterintuitively, extremely unlikely events like this happen
  | very often. The odds of a specific event like this are
  | astronomically small, but there is an even more astronomically
  | large number of _different_ possible unlikely events. The sheer
  | number of possible events is orders of magnitude greater than
  | the odds of individual unlikely events, causing them to occur
  | regularly.
  | 
  | The universe is a really weird place, where really weird stuff
  | happens constantly.
 
    | hammock wrote:
    | https://en.wikipedia.org/wiki/Birthday_problem
 
    | ckastner wrote:
    | > _Counterintuitively, extremely unlikely events like this
    | happen very often._
    | 
    | As the saying goes, "people win the lottery every day", and
    | there are a lot of lotteries active on this planet.
 
    | DieBruderBauer wrote:
    | Imagine if you took the Everettian interpretation of Quantum
    | Mechanics.
 
      | skissane wrote:
      | If it is true, doesn't it follow that there are (very rare)
      | universes where unlikely events happen so often that anyone
      | in such a universe would effectively observe a different
      | probability distribution of events?
      | 
      | The thing is, if the theory is true, how do we know we are
      | not in such a universe? We can say it is extremely unlikely
      | because they are very rare - but we say it is "unlikely"
      | and "rare" because we assume the global (multiverse-wide)
      | probability distribution is similar to the local (this
      | universe) one - but isn't that assumption effectively
      | equivalent to the assumption that we are not in such a
      | universe? An argument which begins by assuming its
      | conclusion is not much of an argument.
      | 
      | However, if we can't rely on that assumption, it seems in
      | principle impossible for us to know what the global
      | probability distribution is - how is that not a lethal blow
      | to the entire theory?
 
        | UniverseHacker wrote:
        | If you insist on using old fashioned logic to reason when
        | in a probabilistic universe where that kind of reasoning
        | is only an approximation, you can say that the universes
        | you are talking about don't exist. They are such a small
        | fraction of possible universes, that you can safely
        | 'know' you aren't in any of them without checking.
 
    | TedDoesntTalk wrote:
    | Like separate rolls of a single dice, I thought the
    | occurrence of one event has no affect on the probability of
    | another?
 
      | kelnos wrote:
      | Right, but while it may only be a 1/6 chance that a single
      | die roll will give you a six, rolling more and more dice
      | eventually makes it a near-certainty that at least one will
      | give you a six.
 
      | UniverseHacker wrote:
      | Indeed, but I think you might be misunderstanding what I
      | said. Think of the universe as a nearly infinite number of
      | dice rolls all independent and in parallel. Any possible
      | rare combination of dice rolls will actually be happening
      | constantly.
 
      | shawnz wrote:
      | The person you are replying to isn't saying anything about
      | the probability of individual events. They are talking
      | about the probability of at least one of many events
      | occurring, which does change with the number of events
      | being considered
 
| jl6 wrote:
| What seems amazing is that it isn't covered in more sand and
| sediment. It would take such a small thickness of covering to
| hide it from view forever.
 
  | daveslash wrote:
  | I wonder if it could have gone through cycles of
  | buried/uncovered? I don't know anything about the waters off
  | Florida other than they experience periodic hurricane events.
 
    | brk wrote:
    | Very likely. I am in the west coast of Florida, and storms
    | can really shift things around quite a bit. Passages between
    | some of the small islands can open or close after a decent
    | storm. Sandbars come and go, etc.
    | 
    | The waters tend to be a little deeper on the east coast,
    | which would tend to lessen the effects of large shifts, but
    | over a timespan of nearly 40 years it is very likely the
    | piece had been covered over at some point.
 
  | googlryas wrote:
  | It could be U shaped and not just a flat panel. Also, I assume
  | the ceramic tiles have a very low coefficient of friction, so
  | if it was stuck at any kind of small angle, the sediment might
  | easily get carried off.
 
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(page generated 2022-11-15 23:00 UTC)