Snap! takes inspiration from Scheme. I wouldn't compare Scratch to Lisp/Scheme at all, as IMO lambdas, cons-cells, and (the ability to make) expression-based co

Snap! takes inspiration from Scheme. I wouldn't compare Scratch to Lisp/Scheme at all, as IMO lambdas, cons-cells, and (the ability to make) expression-based control structures are all defining features of Lisp/Scheme, and Scratch does not have any of them. To my understanding, Scratch's design seems to be inspired by Kay-style OOP (Scratch's "broadcast" feature is about passing messages between sprites, and the first version of Scratch was written in Squeak).