I think the idea is that declarative statements use "equals" like math uses equals, not as assignment. If you say x = 1 and then later say x = 2, that is a cont

I think the idea is that declarative statements use "equals" like math uses equals, not as assignment. If you say x = 1 and then later say x = 2, that is a contradiction. Usually if you evaluate each statement in order from top to bottom, that is procedural programming. And if you don't do that, it's hard to assign multiple values to one variable because you need a way for the compiler to know when the variable has each value.