Mayim Bialik, who has advanced degrees in neuroscience, said that while her background helped with memorization, it is not the only key to success when playing a scientist on TV. Bialik also talked about how Jim Parsons could play the role of a genius physicist despite not having a background in the hard sciences.

According to Bialik, Parsons may not be a brilliant physicist but he’s a phenomenal actor equipped to do justice to the quirky Sheldon Cooper. She believes Parsons was able to capture the essence of Sheldon purely through his dedication to acting and raw professionalism.

It should also be noted that Sheldon’s grating quirks would’ve been completely off putting if they’d been handled by a less capable actor. Parsons has over 40 acting credits to his name, appearing in films such as "The Muppets," "Hidden Figures," and "Extremely Wicked, Shockingly Evil and Vile."