Arithmetic was not designed to train the image skill — but it happens, almost incidentally, to train it. An account of what the diagram is actually for, what the industry leaves unsaid, and why the exam itself is structurally flawed.

A hypothesis: the pattern-memorization trap I observe in Japan is probably universal, not Japanese — because education is more universal than custom.

Empty reform talk, traditionalist self-protection, parents who cannot evaluate teaching, and short-term exam wins. These four forces operate in any country where exam prep becomes an industry.

The origin of CreateBase — what was broken about existing cram schools and why starting from scratch was the only option.

When exam preparation crosses into harm. A direct account of what happens when parental pressure overrides the child's own development.

A framework for filtering what actually matters — and ignoring the rest. Most exam advice is noise.

Why neither model works as advertised — and what a third option looks like in practice.

The three variables every student and parent obsesses over. Only one actually determines outcomes.