But that's the thing. What's the potential you're aiming? Because you can come up with similar results and different methods and same method and different results. Generally we all have similar genetic potentials. The variations are small and displaced from one to the next. And if the environmental stimulus seems so ceucial like you said, it's because we develop in layers and what happens at each layer gives further meaning to the added layers. The ONLY place where genetics were thought to remain close to deterministic was with phenotypes, like the 7 feet bball player you mentioned. But even that is being turned on its head at the moment. Variations that are outside the norm are not always explicable by gene inheritance. Like two small parents who have a teen who's a foot higher than both his parents (yes it happens). Family tree, still no one close. Where does the variation really come from? Yes tall parents give taller kids on average, but not always. The population itself is getting taller.