[hcarvalhoalves]

> Changing your mind is hard because it’s easier to fool yourself into believing a falsehood than admit a mistake.

Different angle: it's not simply "fooling" oneself, but it's because ideas are one way or another built on top of an ideological foundation.

Einstein rejecting quantum theory on the basis the universe shouldn't have a random component to it is also rejecting the idea of having to re-examine all philosophy past Descartes and Newton, which aligned so well with society's viewpoint at the time - a deterministic, cause-consequence universe, where things have logical explanations and where hard work is rewarded.