i wanted to ask you about where this all ands in the arguments around memorizing things. We cannot critically appraise things that we don't have a basic knowledge of, he says. But there really isn't any way round being able to understand nearer science of parkerson's disease without knowing the terminology of substantial nigr and dope mean. So it's my long winded way of saying we do have to learn and memorize a lot of facts, particularly in stem, but that's no bad thing.