Lisp uses the first definition. And it's as dynamic as they come. Java also uses the first definition. I suspect a more proper description would be: #1 is t

Lisp uses the first definition. And it's as dynamic as they come. Java also uses the first definition. I suspect a more proper description would be: #1 is the correct definition, formally used for 80 years now. #2 is incorrect, and is being abused by people in JS and Python who should know better.