A dying idea rarely announces itself. Psychologist Frederic Bartlett discovered in his 1932 memory experiments that people don't simply recall information — they reconstruct it, unconsciously patching gaps with what already makes sense to them. Each retrieval quietly overwrites the original. The insight you're most confident about today may be a tenth-generation copy of what you first observed, smoothed and strengthened by every subsequent telling. This is the hidden cost of conviction: the more fluently you can explain an insight, the more likely you are to be explaining a memory of it rather than the thing itself. Bartlett's corrective was deceptively simple — he asked subjects to return to the raw material rather than their account of it. In financial thinking, that means occasionally going back to the original data, the first note, the actual numbers — not to find that you were wrong, but to check whether your polished explanation still fits what was actually there.

What is the original source of your most durable financial conviction — and when did you last read it, rather than remember it?

Drawing from Cognitive Psychology / Bartlettian Memory Theory — Frederic Bartlett (Remembering: A Study in Experimental and Social Psychology, 1932)