How are geniuses produced by families? Why does a genius thinker or inventor, not have genius children?
Epigenetics leads directly to a possibility about family inheritance of intelligence and genetic behaviors. If environmental factors are capable of turning genes "on" or "off", then this immediately explains how genius within a family, within a genetic inheritance, may appear in one generation, but not in the next. It explains why and how, exactly, the phenomenon and rarest occurrence of "genius" appears seemingly at random. What if genius is not random?
What if specific environmental factors are required, for the fulfilled potential, of a particular family's or person's genes?
What if cultural and social factors are necessary, to elicit the flourishing of one particular genius, or great leader as in times past?
This genetic phenomenon is easily explained by genetic reproduction, and cell replication.
What causes a cell, any cell, to reproduce? It's nothing more than resource availability. If a cell is saturated in an environment of energy to consume, then it will reproduce. And if this energy disappears or becomes unavailable, then the cell will stop reproducing, as it has no more access to (calorie) energy. Metabolism stops, when no energy is available.
This simple environmental factor, causes particular types of cells to reproduce.
The question then, the mystery is, what causes a cell to reproduce when energy is scarce?
What causes a cell to stop reproduction when energy is plentiful?
Because these are contradictory causes of biology. If a cell has plenty of energy, then like a cancer cell, it should grow and grow and grow, without limit or order. Cancer is explained by Epigenetics. If a gene is mutated, perverted or destroyed, by radiation for example, then it can be switched "on" for imminent replication. It will grow, and grow, and grow, and not stop growing.
This explains tumors and cancer cells. Its genetic code has been damaged, in some particular way, to malfunction.
It has been turned "on", perhaps by accident, or perhaps on purpose by the human body. Science cannot know this, until much more environmental effects and chemicals are studied with relation to turning distinct genetic codes on or off.
A "cure" for cancer could be as easy as locating potentially cancerous and damaged gene segments, and turning them "off". This would stop their replication and uncontrolled growth.