As a freshman at MIT, Alexandr was struck by his classmates' interest in AI. But he realized that despite all that AI technology could solve, there was no solution for managing AI-related data. So, at 19, he dropped out of college and started Scale AI. Scale now helps customers like Pinterest and Toyota accelerate the progress of AI and has grown to a valuation of $3.5B. Alexandr shares how AI is changing software development, why he believes in surrounding yourself with optimistic people, and how he learned to get comfortable with not being able to do everything at once.