> programs with well thought out rules systems are very useful and safe No, it's easy to come up with well-thought-out rules systems that are still chaotic and

> programs with well thought out rules systems are very useful and safe No, it's easy to come up with well-thought-out rules systems that are still chaotic and absurd. Conway's Game of Life is Turing Complete! It's extremely easy to accidentally make a system Turing Complete.