It can be very frustrating when someone you are trying to instruct just bails out on something that appears, at least to you, very simple to understand just by

It can be very frustrating when someone you are trying to instruct just bails out on something that appears, at least to you, very simple to understand just by following some easy, clearly defined steps, and they exclaim: "No, I can't do this. It's just too complicated!" In some cases, perhaps even most, this is due to an aggressive indifference to learning something new, but maybe it is not always the case that this is the explanation? It could be that the mechanism for understanding this one particular matter is genuinely missing or undeveloped in that person's brain.