Wrong answers are not failures. They are data about how you think.

Official explanations are written by people who already know the answer. They tell you why D is correct. They rarely tell you why B felt more convincing — in that moment, with that phrasing, given how you were reading the argument.

That gap is where the mistake lives. And if you don't close it, you'll make the same move again on the next question that looks similar.

Building a proper error log by hand means copying questions, writing out why you were wrong, tagging categories, and hoping you remember your own notes weeks later. Most people give up halfway or reduce it to a list of question numbers.

Even when you keep it up, isolated entries don't reveal the pattern. Three weeks later, you can see what went wrong — but not why the same kind of mistake keeps returning.

Courses give you frameworks that work for everyone — which means they're optimized for no one. You finish the curriculum, do the drills, and still plateau. The generic advice doesn't reach the specific habit that's costing you points.

Your errors are not random. They come from a repeatable reasoning move: chasing echoed keywords, trusting a familiar shape, attacking the wrong target. That habit is invisible from inside one question.

Formal notation, symbol sets, diagram methodologies — some tools require weeks of onboarding before the visuals actually help. Under time pressure, a system you half-learned becomes another thing to manage.

Strong intuition develops when you see argument structures clearly and repeatedly, without the overhead. The shape of a gap should become recognizable on sight — not after decoding a diagram.