I'd dig into you here but comrade @[email protected] managed to perfectly. You use the analogy because you believe in what the metaphor represents (that brains can be better analyzed at the level of neurons to understand what they are, while dumbass psychologists think you can get it from experiential analysis). The computers are always of course a metaphor, but you're influenced deeply by the thought processes which arise from the simplification of human experience (or any living experience) to a mathematical basis which computers also use. There is no reason to believe this or take the analysis at that level as any more serious than experience (which we also can't prove but I can feel something so I believe it)