This is really mind boggingly, meaning that there is an actual discrete valicable limit of what can be determined and what can't. Turing machine with 4 states?

This is really mind boggingly, meaning that there is an actual discrete valicable limit of what can be determined and what can't. Turing machine with 4 states? Cool. Turing machine with 5 states? Sorry, it goes beyond ZFC maths!