20 June 2017 | grizzledgeezer
incomplete and overly simplified
Anyone who's read "A Brief History of Time" knows what a poor job Steven Hawking does explaining things. He's no Richard Feynman or Carlo Rovelli.
I just watched episode 2, a grab-bag of ideas that never coalesce into a coherent view. Much is omitted -- time dilation, Heisenberg's Uncertainty Principle, and most importantly, Einstein's major goof -- "God doesn't play dice".
We are left believing that the statistical behavior of quantum effects is somehow equivalent to the statistical behavior of macro objects. Not so. You //can// predict where the roulette ball will fall, but not when an electron will drop from a higher quantum level.
In quantum physics, there is no "cause and effect", and there is no discussion of the argument about whether there are hidden causes that haven't been discovered. (There aren't.)
I was bothered that string theory is given credence. Scientists have been abandoning it, because no one has been able to propose experiments that reveal whether it's correct. That makes it a poor theory, because it isn't falsifiable.
A sloppy, intellectually lazy presentation of physics.