[currymj]

what i recall was that there were many pitfalls even to do something simple, and this event suggests that even experts may find it difficult to avoid mistakes.

part of the challenge was just the inherent weirdness of the ethereum execution environment, where the functions you write can be directly called by an adversary, and they can set up their own version of the stack however they want.

it didn't seem like the language helped to mitigate the inherent difficulty however.