They are incorrect. Though yes plasticity is possible. You can improve your demo

They are incorrect. Though yes plasticity is possible. You can improve your demonstrated intelligence with general knowledge, specific knowledge and direct experience. You cannot improve (g) which is a basic property of your biological development. Most people who continue to learn and develop will gain a point of advantage every x years, but you cannot by any known method improve the transmissibility of your neocortex.

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