4 ms·
> But why does time necessarily have to start at that point? Because that's just how the math works. It's just like asking what's north of the north pole, or w
by varajelle 5y ago
> But why does time necessarily have to start at that point?
Because that's just how the math works. It's just like asking what's north of the north pole, or what if you go more down if you are in the center of the earth.
- denton-scratch 5y agoThe passage of time can't be measured in the absence of matter (with mass). "Particles" that whizz along at the speed of light can't be used to measure the passage of time. So if there's nothing in the universe but photons, the passage of time makes no difference to anything in the universe; so there's grounds for saying that time exists. Something can only be said to be "real" if its existence or non-existence makes a difference to something else. /me is not a physicist or a mathematician; just regurgitating what I've read in popsci books and articles.