Einstein was faced with a very serious constraint, a very serious limit. The speed of light can only go at just one precise speed. So he put all his confidence in the speed, and not in his life experience of space and time. He wrapped everything else around the requirement they both measure the same speed of light. That's righd. In doing so, it distorts time,. It distorts space, and it s with our classical understanding of nature. And he did that to preserve the speed of light exactly. Space and time are relative, but the speed oflight is absolute. Er it couldn't be called the absolute theory. I onice, i had a microphone