Spidey wrote:The fusion of atomic nuclei requires tremendous heat and pressure. If it didn’t it would happen all the time, and the galaxies would either fall apart or form into one big blob, all by them selves.
What law of physics dictates that fusion can only happen under tremendous heat and pressure? Thats where we've observed it, but that does NOT equal a law of physics. The fact that cold fusion is not happening all the time does NOT exclude the possibility that it COULD happen, since the situation required for it to happen might be unusual.
Your argument here is akin to saying that fission chain reactions do not happen because we've never seen it happen and if atoms could fall apart and cause other atoms to fall apart in a chain reaction, everything would have blown up by now.
This argument would have sounded pretty good if you presented it back in, say, the 30's. But there was no fundamental law of physics that said chain reactions couldn't happen. Turns out they can.
Cold fusion may very well be impossible, but it is a fundamentally different problem, a whole different KIND of problem than traveling faster than the speed of light. Bypassing the speed of light requires finding a loophole in the rules the universe operates by. We do NOT know that this is the case with cold fusion.
Bettina wrote:That video was awful and I agree with Jeff250. The multiverse I've read about are just other universes that, although physically connected to ours, remain separate. Think soap bubbles. We live in one of those bubbles.
I thought it was funny. But you and Jeff250 are both right. Most of the conundrums addressed in the vid were related to the problem of having an INFINITE and unlimited multiverse. A finite (or strictly limited) multiverse avoids those issues.
On Time Travel, I like Larry Niven's argument. If it is possible to create a time machine that enables you to change your own past, then logic dictates that no such machine will ever be used.
Consider, any timeline that DOES result in the building of a time machine AND USES that time machine to alter its own past, will wipe itself out. Butterfly Effect, Chaos theory, etc.
The odds of any particular sperm reaching a particular ovum are astronomically small. Alter any tiny event in the timeline and you get different people being born. If Thomas Lincoln stumbles slightly on the way home one critical evening, a different sperm ends up getting to Sarah's ovum that night, and Sally Lincoln is born instead of Abraham Lincoln. That change, of course, spreads rapidly, and within a relatively short amount of time the odds become tiny that ANY individual born in the old timeline still exists in the new.
It's like weather. It all follows SOMEWHAT predictable rules on the macro level, but change the air pressure by one stroke of a butterfly's wings, and in a few years, the weather will be completely different.
SO, if any timeline that alters itself automatically eliminates itself. It eliminates the time machine (or it's use). Evolution dictates that the timeline will continue to stay in flux until a timeline arises in which no one uses a time machine to alter the timeline. THAT timeline will be stable.
Note, all based on the assumption that you can alter YOUR OWN timeline. Multiverse timetravelling is unrelated.
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I like that.
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but we stop like 15 yards of the goal. Thus we come up with ideas like the multiverse. ...but I digress from the topic. Drakona and I had an interesting discussion on the topic last year. Had to do with Monkeys and typewritters. 
