blf comments on Do you believe “E=mc^2” is a correct and/​or useful equation, and, whether yes or no, precisely what are your reasons for holding this belief (with such a degree of confidence)?

[blf]

Actually, the best tests of QED are correct to 13 decimal places, see the electron’s g in https://​​en.wikipedia.org/​​wiki/​​Anomalous_magnetic_dipole_moment , or 10 if you only consider g-2 (which is much smaller than g).