It's an expression. [ Don't ask where he got it from, he doesn't know. How is he supposed to express what it is he's so leery of, though? Without being disrespectful? He doesn't have the same vocabulary to draw on, just vaguely recalled examples of practices he knows are bunk. ]

I just mean - it's - I didn't lose my memory because of imbalanced humours, or misaligned vertebrae, or - or vibrations in the ether. There's bound to be a logical explanation.