Einstein is always proved right because Einstein's theories are untestable in practiocal terms (as the author suggests,) and so the "proofs" we are offered are the results of mathematical speculations.

A mathematician I once worked with was fond of reminding colleagues that "mathematics is the only exact science."

Being in a facetious mood on one occasion when he said it, I quipped, "Yes, tewak the equation enough and mathematics will always give exactly the answer you wanted.

Einstein's theories are interesting but I always regarded him as more a philosopher than a scientist, he offered us some wonderful ideas but his "thought experiments" cannot be proved by empirical evidence. For me the ideas proposed by Tesla are more interesting.