Search found 14 matches

by JeffR23
Mon May 23, 2016 10:36 pm UTC
Forum: What If?
Topic: What-If 0150: "Tatooine Rainbow"
Replies: 52
Views: 44570

Re: What-If 0150: "Tatooine Rainbow"

Let's be fully specific; since we already have the term 'ping-pong' planets for ones that switch off between the two stars, how about 'ping planets' for ones orbiting the larger of the binary and 'pong planets' for ones orbiting the smaller? (For the edge case where the two stars have exactly equal ...
by JeffR23
Thu Sep 03, 2015 8:59 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1572: "xkcd Survey"
Replies: 366
Views: 130135

Re: 1572: "xkcd Survey"

I picked '4' on the scale because that's what I tend to rate things most when rating things on a scale of 1 to 5. Generally positive, but won't give top marks except rarely. (I've recently been informed that some consumer-response surveys of this sort treat everything not '5' as '0', but I refuse to...
by JeffR23
Mon May 18, 2015 8:34 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1526: "Placebo Blocker"
Replies: 47
Views: 11421

Re: 1526: "Placebo Blocker"

You know, it occurs to me that sugar isn't exactly a biochemical nullity (like salt, if it were invented today it would never come need to being approved as a food additive by anyone...) and thus that sugar pills are likely a poor choice for placebos rather than something like chalk or cellulose. Ho...
by JeffR23
Thu Mar 19, 2015 6:23 pm UTC
Forum: What If?
Topic: What-If 0133: "Flagpole"
Replies: 70
Views: 24456

Re: What-If 0133: "Flagpole"

I'm also more interested in the other half of the question, so recasting: is it actually possible to launch someone (with, say, a human cannonball, a catapault or trebuchet, or an old-school seesaw-and-dropped weight system) close to but not quite straight up near a tall building such that they're a...
by JeffR23
Mon Mar 09, 2015 8:51 pm UTC
Forum: What If?
Topic: What-If 0132: "Hotter than Average"
Replies: 25
Views: 21830

Re: What-If 0132: "Hotter than Average"

What about the related question about the average temperature of all water that is part of Earth? Just how much water content is there in the mantle and core, anyhow? Enough to not be dominated by the oceans?
by JeffR23
Mon Jan 26, 2015 9:49 pm UTC
Forum: What If?
Topic: What-If 0126: "Stairs"
Replies: 67
Views: 25580

Re: What-If 0126: "Stairs"

Bah - we need the cost to go down hill to work out how to go up, as we need to go up with supplies, set up the cache, then come back down without starving. You go back down sliding the banister. (Okay, probably something somewhat safer than that involving a rope harness and some kind of friction ra...
by JeffR23
Tue Aug 19, 2014 10:57 pm UTC
Forum: What If?
Topic: What-If 0108: "Expensive Shoebox"
Replies: 151
Views: 106441

Re: What-If 0108: "Expensive Shoebox"

It looks like S bb to me, which may be the number of steps in the busy beaver of that number rather than the number of 1s that Sigma bb is. It also occurs to me that I was wrong about the largest possibly physically meaningful finite integer. My new candidate is "Take the power set of the phase...
by JeffR23
Fri Aug 15, 2014 4:30 pm UTC
Forum: What If?
Topic: What-If 0108: "Expensive Shoebox"
Replies: 151
Views: 106441

Re: What-If 0108: "Expensive Shoebox"

I am prety sure that that check/cheque is more expensive than the number of plank lengths in the universe. That assumes that any bank would accept that check/cheque. That's actually not as useful an estimate as it seems, given that 10^200 is trillions and trillions of times larger than the number o...
by JeffR23
Thu Apr 03, 2014 10:23 pm UTC
Forum: What If?
Topic: What-If 0090: "Great Tree, Great Axe"
Replies: 55
Views: 12758

Re: What-If 0090: "Great Tree, Great Axe"

Hmm... except that if all men are one man, and supposing that man is somewhat unlikely to reproduce, I'm reckoning it probably would wipe out the human race. In the versions where the women were left out (as evidenced by their availability as cops), about 3 million of them will have been pregnant a...
by JeffR23
Fri Feb 14, 2014 5:40 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1330: "Kola Borehole"
Replies: 88
Views: 19140

Re: 1330: "Kola Borehole"

I think hatguy is seriously underestimating the risk of running out of Ocean before we run out of Hell...

(And the effect on surface temperature and pressure of exchanging signficant volumes of liquid ocean for hot, rising steam.)
by JeffR23
Thu Dec 19, 2013 9:18 pm UTC
Forum: What If?
Topic: What-If 0076: "Reading Every Book"
Replies: 54
Views: 17174

Re: What-If 0076: "Reading Every Book"

mathmannix wrote:So, has anyone else yet tried the http://www.goodreads.com/book/random repeatedly to see how many tries it takes to get a book you have read?


72 here, eventually landing on The Scarlet Letter.
by JeffR23
Wed Oct 30, 2013 6:38 pm UTC
Forum: What If?
Topic: What-If 0069: "Facebook of the Dead"
Replies: 38
Views: 14648

Re: What-If 0069: "Facebook of the Dead"

Isn't this actually complicated by the current and future proportion of Facebook users who are completely fictional (and therefore theoretically immortal)?
by JeffR23
Tue Oct 15, 2013 9:16 pm UTC
Forum: What If?
Topic: What-if 0067: "Expanding Earth"
Replies: 62
Views: 15597

Re: What-if 0067: "Expanding Earth"

What kind of mayhem should we expect from the Solar System as the Earth keeps growing? (Which planets are likely to be captured away from the sun, and which ones expelled entirely? Does the asteroid belt relocate, and is that bad news for any of the planets in the way?)
by JeffR23
Tue Oct 01, 2013 5:21 pm UTC
Forum: What If?
Topic: What-If 0065: "Twitter Timeline Height"
Replies: 102
Views: 37900

Re: What-If 0065: "Twitter Timeline Height"

If the doomsday argument works today, it would have worked a thousand years ago. If it had worked a thousand years ago, we'd all be dead. We're not dead. Contradiction, so QED: the doomsday argument is silly. (Also, if it's right the same argument proves we're most likely simulations or intelligence...

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