The brain can literally not process any piece of information without being changed by the act of processing it. Neuronal pathways are constantly being reinforced or weakened.
Even remembering alters the memory being recalled, entirely unlike how computers work.
I've always find it interesting that once I take a wrong turn finding my way through the city and I'm not deliberate about remembering this was, in fact, a mistake, I am more prone to taking the same wrong turn again the next time.
Even remembering alters the memory being recalled, entirely unlike how computers work.