User-reported unhelpful error message

[codeworld-feedback]

Program: https://code.world/#PhvNXDF6GIEo70umUiorSUA

Comment:

What is simulation now?

Message:

program.hs:1:9-20: error: 
    Variable not in scope:
      simulationOf
        :: (p0 -> (Number, Number, Number, Number, Number),
            ((Number, Number, Number, Number, Number), Number)
            -> (Number, Number, Number, Number, Number),
            (Number, Number, Number, Number, e0) -> Picture)
           -> t