http://www.fourmilab.ch/etexts/einstein/specrel/www/
THE paper about Special Relativity, by Einstein himself.
http://www.alberteinstein.info/galle..._pp146-200.pdf
THE paper about General Relativity, by Einstein himself.
Don't take my word for it, don't take Daves either, read for yourself and judge.
The confusion about Time, btw, is because Einstein wanted to preserve causality and locality.
The speed of light limit preserves locality.
The rate of time constant being located at zero mass preserves causality.
One of those must be wrong, if both are wrong, we have to throw out a working theory of the Universe. If only one is wrong, we simply have to adjust it to account properly for those effects.
Trying to adjust the speed of light limitation has yet to work in the last 100 years, Smolin is hinting that perhaps the causality limitation is the problem.
I'm saying for certain that it is the problem, and startlingly, that Quantum Mechanics emerges from a Relativistic framework if you correct that causality limitation placed by Einstein.