It has been ten years since the first season of The Big Bang Theory. Ten years of change, evolution, and character growth. In episode 11 The Birthday Synchronicity, our characters discuss how far they have all come and evolved. But those changes were all things that they see while we as an audience notice far more.
Character development is important for any show to stay afloat. Which of our characters has changed the most since their introduction to the show? Here are the top three.