An excellent distinction to be made, Andrei, and you have clearly spent some time contemplating it. Thanks for sharing your thoughts on this. Great job! Also, I remember reading the following a number of years ago, and you might find this more recent update of interest: https://www.independent.co.uk/news/science/children-intelligence-iq-mother-inherit-inheritance-genetics-genes-a7345596.html and P.S. for future reference, I think you meant broader… spelling…