Actually, the point was more to make them crash in identifiable ways. As AmigaDOS had no memory protection, badly-written programs tended to crash anyway---but you could get a debugging dump showing the contents of your registers, so if 0xDEADBEEF showed up in a register you knew you were reading from wherever Mungwall had poked it. Enforcer was a more useful tool that provided AmigaDOS with limited memory protection.