I can't get it through my head!
If someone were to travel 99% the speed of light and come back 4 years older, I can't see why the people on earth aren't only 4 years older as well.
Since you can't travel that fast, I suppose it doesn't really matter. Wow- Einstein thought up some pretty confusing stuff. Again, I understand, yet it doesn't make sense.
Thank you for your replies!