What evidence do you have that intelligence is fixed? I believe there is evidence that it is mix of fixed and not fixed attributes, but I don't think there's any evidence that it is strictly fixed.
Right. The parent comment I was replaying to stated “if intelligence is fixed” and I was attempting to cast doubt on the clause. I wouldn’t want to take position that intelligence is fixed in an argument.
The context was more of a fixed ceiling. Presumably everybody knows and agrees that being tired, drunk, ill, having dementia, etc. can affect apparent intelligence. By "fixed intelligence" the implication is that there is a ceiling where a person's brain has developed and they are fully functional that isn't straightforwardly or easily raised.
Perhaps for performance on a fixed kind of test or for certain kinds of raw calculation speed, it is true, but handling complexity and problem solving skills can continue to develop based on experience and exposure to concepts.
The belief that intelligence is fixed is a trap for the mind.
I wasn't asserting that it was true, and it seems that you want to argue with someone who both thinks that "it" is true and has a different definition of it from what I was using, in context.