3 ms·
This is really interesting. Our thinking is so entrenched in 3D, we just can't develop an intuition for a universe where space itself expands and there is nothi
by rqtwteye 4y ago
This is really interesting. Our thinking is so entrenched in 3D, we just can't develop an intuition for a universe where space itself expands and there is nothing else. Even if you say that the universe expands into something then what are the boundaries of that? Turtles all the way down.
- WastingMyTime89 4y agoI don’t know. Everyone can understand a change of metric. If you decide that what used to be 1cm is now 2cm, everyone will understand that everything is now twice as far. Now, imagine that instead of suddenly going from 1cm to 2cm, you do it gradually during say, 1 minute. Well, congratulations, that’s expansion right there. I never understood the balloon analogy. It’s just a bad one.