Does Albert Einstein have any controversies?

Answer 1

Several, but I'll simply mention the two largest:

Einstein's equations for General Relativity do not permit a stable Universe; it must be either be expanding or contracting. Einstein recognized this, but refused to accept the obvious idea that our Universe is expanding and had a definite starting point. Instead, he simply "waved his hand" and added a factor in his equations to cancel out a contracting Universe. When it was observed that our Universe is, indeed, expanding; Einstein admitted that his idea was his "biggest blunder."

Literally to his dying day, Einstein refused to accept the most basic idea of quantum mechanics: that our Universe, at its most fundamental level, is uncertain. Einstein agreed that our Universe may give experimental results that resemble that, but felt that the objects "knew" their characteristics prior to being measured (the technical name is "hidden variables.") Experiments over the last 15 years have absolutely ruled out that idea.

Answer 2

One controversy surrounding Albert Einstein is his involvement in the development of the atomic bomb during World War II. Some criticized him for his role in creating such a destructive weapon, while others viewed it as a necessary measure to end the war. Additionally, Einstein's personal life and relationships have also sparked controversies and debates among historians and biographers.