[narwally]

I agree with you to an extent, but learning lisp is a bit more involved than just picking up another programming language; it's learning to program in a completely new paradigm. I think it's perfectly reasonable to expect students to pick up things like syntax and standard libraries on their own, but to expect everyone to seamlessly pick up the functional paradigm with no help from the instructor is a bit much. For something like this there should be at least one lecture that goes over some of the fundamentals of functional programming and gives students the vocabulary they'll need to find the solutions to any roadblocks they run into.