Watch Popular Theory (2023) HD Full Movie Free on solarmovie.do. Watch Popular Theory (2023) online free. Erwin, a girl genius, is the youngest student in high school. Unfortunately she struggles with socia...Erwin, a girl genius, is the youngest student in high school. Unfortunately she struggles with social isolation. When she meets fellow science guru, Winston, they team up to invent a chemical that changes the high school hierarchy forever.