True existence is that which is perceived by all minds?

[WaveJumper]

Don't worry, a large portion of the most revered physicists believe there exists a universe where pigs evolved wings and are flying. This is something you could present at physics conferences without causing any confusion. MWI is pretty friendly towards flying, swimming and singing pigs, it's just that they have decohered from us and there is no way to see them.

Universe where pigs have evolved the ability to play soccer:

http://img40.imageshack.us/img40/2760/62975230.jpg

 

[flatmaster]

y = y0 + v0t + .5gt^2

Let g>0

There you go, you're flying