Einstein was a clever guy,no doubt about that. We've all been thought that in school if nowhere else. So what did he do exactly. The implications of his work is so mind boggling i can hardly describe it.
Take time and space dilation for example. If we were to travel at close to the speed of light,time to us, would pass more slowly compared to people observing us. If we traveled for a year close to the speed of sound away from the earth and back again, a lot more time would have passed on earth. How much depends on how close to the speed of sound we were travelling. In fact if you have a constant acceleration of 1G travelling the entire known universe in one lifetime is possible. However,when you returned to tell the world about your adventures, millions of years would have passed and the earth as we know it would no longer be. In fact i'm not sure it would exist at all. This is time dilation,a direct consequence on how the space-time works.
And that's not all,not only does time pass more slowly, space itself shrinks when travelling close to c (speed of light constant). Things get closer the faster you travel. How close ?
Now imagine travelling at the speed of light. We can't. But light can and in fact it does! To light, the entire universe becomes a single point. A singularity. Just like the universe was before the Big Bang. Now wait a minute, you said it takes light 4 years to travel from the nearest galaxy to us in your last post,didn't you ?
Yes for us that is true but we observe the light,we are not the light. Due to time dilation, to light,it got here in an instant. And it can get anywhere in an instant. To light,the universe is a single point. Not only that, time would appear to stop,which is just as well because it would imply time passes by infinitely fast, which means the end of the universe will already have happened! To light the beginning and the end of the universe and everything in between happened at the same time. Now. And it all exists at the same time. Now.
Haven't we heard this before ? Ah yes,our old friend,the multiverse theory.
Now tell me again,i'm boring and unimaginative. That if you don't believe in the things we can't observe,and all the things i have described in the last two posts are a direct consequence of what we can observe, you're somehow a bit dull. Huh ?