How do I get out???

Alt-F4

you can't get out of the matrix

Well the 'sum of angles in a triangle' is 42 which is the 'the answer to life, the universe and everything' which should include the flatness of the universe right? :)

I guess we'll know when the question to life, universe and everything else is calculated in 737373758586857 years :'D

triangles??? ... i thought that our universe is a bounded, smooth 3-dim manifold of the 4-dim space-time?

The three dimensional space that makes up our universe is believed to be veeery slightly curved -> almost totally flat. The flatness is represented by the fact that a triangle has an angle sum of 180°. I don't quite understand how these 2 work together.

you can post from where you got the thing with triangles (with more precise definitions). i don't see why the 2 things should work together.

the universe as a bounded, smooth 3-dim manifold of the 4-dim space-time is flat, thats hard to imagine. just imagine a plane in 3-dim real vector space, its flat, the same way is the universe locally in the 4-dim space-time.

there is also the possibility that theoretical physicists define the universe as flat if the 4-dim lebesgue-measure of the universe is zero. for this concept you need to understand what a lebesgue-measure is, but its a generalization of the other concept.

i don't think you need any triangles for flatness of the universe.

This is from an article about dark energy:

"Determining where a distant object lies in space takes a bit of work, because the universe lacks clear distance markers. Astronomers and cosmologists can infer the three-dimensional position of a star or galaxy by measuring its redshift, which reveals not the actual distance to the object but how much its emitted light has been stretched by its recession from us within an expanding universe. Then, with a few assumptions about the curvature and contents of the universe, they can reconstruct the positions of those objects from redshifts. (Space can have positive curvature, like the surface of a sphere, or negative curvature, like the surface of a saddle. Only in a flat universe does space obey all the standard geometry-class rules—the angles of a triangle add up to exactly 180 degrees and parallel lines never meet.)"
ref

I never thought about the Lebesgue measure argument, but now that you mention it, it's quite obvious. Thanks for this one.

How well is Earth doing at the moment?

Give me a few lines about your opinion on anything regarding the state (good or bad) of the world we live in. It could be political, nature, wealth, famine, well-being etc....something that's at the forefront of your views

I'm a pessimist but I think the people of Earth are doing pretty good these days. I was born in 1963 and until the early 90's I did not believe humanity would last until the year 2000. We didn't have fun with a possible zombie holocaust back then, we were too worried about the very real possibility of a nuclear holocaust. I don't believe by a long shot that nuclear weapons won't be used to kill ever again but such a thing will not trigger a domino effect as it would have before, at least not during the lifetime of anyone alive today.

The anti-science feelings of some segments of society does not even worry me, those kind of people have always been there, on all sides of the political spectrum. They are louder because of modern communication methods but so are their opponents. Both atheists and religious extremists are swelling in numbers.

I'm a Canadian in the province of Quebec. I really do not like how some things are going in my province and in my country, I also do not feel there is any politician I can trust to do get us back in my opinion of the right direction to the future. But I am old enough and know enough about history to know that in the end, the world will progress.

The only thing that can stop humanity (or its sentient creations) to exist is a a very energetic meteorite encounter.

My question:
Will humanity create a sentient species (biological, electronic, future tech...) within the 21's century?

Such a creature exists? SSI war box is my best guess run through DosBox but that is far from modern.
All signs point to yes. On the upside of this is we will all have bionic eyes and sonic hearing to combat our own mech rebellion.

Is it me or does the Xpadder icon look less like a gamepad and more like a tooth?

Well, it`s not you, it really looks like a tooth!

My question is:
Are there any Snooker fans on this forum?