The Most Mind-Boggling Physics Discovery You've Lived Through?

Nelita S. says quantum mechanics is the most mind-blowing physics discovery that she has lived through in her opinion. The idea that there was a completely different paradigm was mind-boggling and on the one hand it's to our great credit as human beings that we were able to shift gears toward it so quickly. Nelita S: I do not have much energy left over for listening to other science podcasts, but they should all reinforce our sense of optimism and wonderment.