The Big Bang Theory may be defying the laws of TV mechanics with its storied success, but there’s one thing co-creator Chuck Lorre said the series “missed” early on with regard to Kaley Cuoco’s character Penny.

Prior to Kaley Cuoco, actress Amanda Walsh was cast to play Katie, “a street-hardened tough-as-nails woman with a vulnerable interior.”

I t’s been over 17 years since The Big Bang Theory premiered, and almost six years since it ended, but the CBS sitcom remains one of the best shows streaming on Max, and its uni