Correct. That's why I explicitly said shared environment (the "nurture") and not all environment (which includes non shared environment). When comparing nature

Correct. That's why I explicitly said shared environment (the "nurture") and not all environment (which includes non shared environment). When comparing nature vs nurture it's going to be always nature. When comparing total trait variance, the genetically explained variance is on average 50% (averaged across all traits). A fraction of the remaining 50% is non shared environment (randomness) and a minute/neglible amount is shared environment (nurture).