What do I mean by rapid mental development? Rapid mental development is the escalation of consciousness. Mental development is not really IQ, per se. IQ is based upon a series of tests that are given to a person, not to evaluate their intelligence, but their ability to learn certain skills such as reading, writing, and so on. Intelligence is not limited to one's ability to function in a predefined world. In my opinion, plants are very intelligent, but I don't think they would do very well on an IQ test.