Search found 461 matches

by userxp
Fri Sep 04, 2009 11:43 am UTC
Forum: Science
Topic: Childhood (not so) crackpot theories
Replies: 435
Views: 78143

Re: Childhood (not so) crackpot theories

I hate it when people assume "infinite universes" implies "absurd universes". There are "infinite universes" because very slight changes can build up over time to create larger ones. I assume in quantum immortality that when you "die", you simply begin to per...
by userxp
Fri Sep 04, 2009 10:32 am UTC
Forum: Science
Topic: Childhood (not so) crackpot theories
Replies: 435
Views: 78143

Re: Childhood (not so) crackpot theories

That's called Quantum Immortality. There's an infinite number of universes, and you can only observe the ones where you continue to live, so you appear to live forever. It depends on a lot of quantum mechanics that I don't really understand, though, so I can't believe in it. I have to say that quan...
by userxp
Fri Sep 04, 2009 10:17 am UTC
Forum: Mathematics
Topic: Possible positions of "Daughter in the box" (Klotski)
Replies: 8
Views: 2972

Possible positions of "Daughter in the box" (Klotski)

I was playing Professor Layton and the Curious Village and I was asked to solve this puzzle: http://1.bp.blogspot.com/_qozgm0W_-kE/R88-mbM-HxI/AAAAAAAAEjU/ExW3DHkbc7o/s320/132B.gif I'm sure you all know the rules of this game: slide the blocks in order to move the red block to the exit. The question...
by userxp
Mon Aug 31, 2009 3:17 pm UTC
Forum: Computer Science
Topic: TrueKnowledge
Replies: 11
Views: 1769

TrueKnowledge

I'm not sure if this is the right forum, but I'll post it here. I don't know if anybody has heard about TrueKnowledge . It is an answer engine similar to Wolfram|Alpha but with less mathematics. It can answer questions such as ⋅  Who wrote harry potter? ⋅  What time is it in Lond...
by userxp
Wed Aug 12, 2009 3:25 pm UTC
Forum: The Help Desk
Topic: Any Opera user noticed this?
Replies: 4
Views: 374

Re: Any Opera user noticed this?

I think my connection is fine, at least 99,9% of the time. The problem is that it happens so rarely that there is no way to trace the problem, but judging from the replies I begin to think it's a router's bug. Maybe if the computer sends a packet at the same time that the router is doing some operat...
by userxp
Tue Aug 11, 2009 8:58 pm UTC
Forum: The Help Desk
Topic: Any Opera user noticed this?
Replies: 4
Views: 374

Any Opera user noticed this?

My primary browser is Opera in a WinXP computer. I've used it for a long time (at least since version 8 came out) and I have noticed that sometimes I click a link and it instantly shows a "page not found" error instead of actually trying to load the page. If I hit reload it works just fine...
by userxp
Fri Aug 07, 2009 6:14 pm UTC
Forum: Computer Science
Topic: What would you do with an infinitely fast computer?
Replies: 818
Views: 226390

Re: What would you do with an infinitely fast computer?

I would make a program that generates every possible program and runs it. After 0 seconds I would have already done everything that is in this thread and everything that isn't. I win. You don't win, because you cannot do that. Just that the computer is infinitely fast doesn't mean you can execute a...
by userxp
Thu Aug 06, 2009 3:31 pm UTC
Forum: Computer Science
Topic: What would you do with an infinitely fast computer?
Replies: 818
Views: 226390

Re: What would you do with an infinitely fast computer?

I would make a program that generates every possible program and runs it.
After 0 seconds I would have already done everything that is in this thread and everything that isn't.
I win.
by userxp
Tue Jul 28, 2009 1:50 pm UTC
Forum: Science
Topic: Childhood (not so) crackpot theories
Replies: 435
Views: 78143

Re: Childhood (not so) crackpot theories

I had so many physics ideas when I was little that I kept a journal. I still have that journal. 21. The only idea in here I've ever actually tried to patent: the Privasphere. Essentially a speaker cancels the sound of your voice beyond a certain point by inverting the sound waves of your voice. One...
by userxp
Thu Jul 23, 2009 3:59 pm UTC
Forum: Forum Games
Topic: Count up in unary!
Replies: 45
Views: 4189

Re: Count up in unary!

:arrow: :arrow: :arrow: :arrow: :arrow: :arrow: :arrow: :arrow: :arrow: :arrow: :arrow: :arrow: :arrow: :arrow: :arrow: http://en.wikipedia.org/wiki/Unary_numeral_system
Spoiler:
To reach one million would take about [imath]5\times 10^{11}[/imath] symbols
by userxp
Wed Jul 22, 2009 4:27 pm UTC
Forum: Forum Games
Topic: Count up in unary!
Replies: 45
Views: 4189

Re: Count up in unary!

11111111
by userxp
Wed Jul 22, 2009 4:09 pm UTC
Forum: Forum Games
Topic: Count up in unary!
Replies: 45
Views: 4189

Re: Count up in unary!

sje46 wrote:10?

It's easier:
1=1
2=11
3=111
4=1111
etc.
by userxp
Wed Jul 22, 2009 4:06 pm UTC
Forum: Forum Games
Topic: Count up in unary!
Replies: 45
Views: 4189

Count up in unary!

We have base 2, 3 and 10, so let's do base 1, and see if we reach a million!

I start:
1
by userxp
Wed Jul 22, 2009 3:57 pm UTC
Forum: Forum Games
Topic: 1000 Blank White Posts
Replies: 383
Views: 23226

Re: 1000 Blank White Posts

Image
by userxp
Mon Jul 20, 2009 11:09 pm UTC
Forum: Logic Puzzles
Topic: Infinite queens on an infinite chessboard
Replies: 35
Views: 27051

Re: Infinite queens on an infinite chessboard

I feel stupid. Only now I have noticed that this is not equal to the n-queens problem for n=∞ (i.e. that you must not only place infinite queens without attacking, you have to place one on each row/column/diagonal). I have even made a crappy OO.Calc macro to try it: http://img170.imageshack.us/img17...
by userxp
Mon Jul 20, 2009 6:57 pm UTC
Forum: Logic Puzzles
Topic: Infinite queens on an infinite chessboard
Replies: 35
Views: 27051

Re: Infinite queens on an infinite chessboard

1. Put a queen on arbitrary square
2. Find closest unattacked square (if there are more than one, choose anyone)
3. Place queen on that square
4. GOTO 2

Wouldn't that work?
by userxp
Mon Jul 20, 2009 6:28 pm UTC
Forum: Forum Games
Topic: Ackermann!
Replies: 12
Views: 1381

Re: Ackermann!

Easy:
A(29,29)
A(A(29,29),A(29,29))
etc.
by userxp
Mon Jul 20, 2009 5:29 pm UTC
Forum: Science
Topic: Tiny Dimensions
Replies: 36
Views: 3075

Re: Tiny Dimensions

Actually, I've read that certain kinds of dimensions could be relatively large, because we haven't been able to accurate test gravity at some of those levels. I think it was in the realm of micrometers, but still, compared to the Planck Length. That gives me an idea: if there happened to be a dimen...
by userxp
Mon Jul 20, 2009 4:37 pm UTC
Forum: Science
Topic: Jumping in a rotating spacecraft
Replies: 7
Views: 1837

Re: Jumping in a rotating spacecraft

Thanks, I didn't find that. I'll take a look at it.
by userxp
Sun Jul 19, 2009 7:47 pm UTC
Forum: Science
Topic: Jumping in a rotating spacecraft
Replies: 7
Views: 1837

Jumping in a rotating spacecraft

Imagine that you are inside a space station/ship which has a centrifugue to simulate gravity, like the Discovery in 2001 . The linear velocity is, for example, 50m/s. If you jumped (or threw a rock) at 50m/s in the opposite direction, would you "stop rotating" and float? That would be a co...
by userxp
Sat Jul 18, 2009 5:16 pm UTC
Forum: Science
Topic: Childhood (not so) crackpot theories
Replies: 435
Views: 78143

Re: Childhood (not so) crackpot theories

When I was a child, I thought that if you were fast enough, you wouldn't have time to do anything, so if you ran really, really fast towards a wall, you wouldn't have time to crash and you'd pass through it. Fortunately I never tried it :wink: .

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