One character that’s hard to miss in the trailer for the upcoming movie Oppenheimer is Albert Einstein, the wild-haired, paradigm-shifting theoretical physicist who needs no introduction. Rest assured, Einstein’s cameo in the movie is not just fanciful Hollywood storytelling (such as Archimedes' unlikely appearance in the latest installment of Indiana Jones). While Oppenheimer and Einstein never directly worked together on any project, the two scientists did cross paths throughout their lives. There’s sturdy evidence the pair grew a strong friendship towards the end of Einstein’s days in the 1950s – and perhaps even shared thoughts on the atomic monster they...