Perhaps he could be a functional programmer if X = X + 1 doesn't make sense ;)
I could understand why if a mathematician found it odd - of course in practice they would understand it, but they would probably in their head make the left most X to be X' or somesuch so they could understand what was going on.
When you do a mutation of a variable - there are all sorts of subtle things to understand about the machine underneath that you wouldn't have to if everything was immutable. I guess its easy to forget that in the day to day.
I could understand why if a mathematician found it odd - of course in practice they would understand it, but they would probably in their head make the left most X to be X' or somesuch so they could understand what was going on.
When you do a mutation of a variable - there are all sorts of subtle things to understand about the machine underneath that you wouldn't have to if everything was immutable. I guess its easy to forget that in the day to day.