These notes are the second in a series of twelve lecture for my class Dynamics of the Family.
In the spirit of our emphasis with "dynamics,"
let us start with the classic questions about sexual attraction, sexual reproduction, and the development of infants
between those who argue that certain kinds of arrangements of any of one of these things is "natural" or "best" or "necessary" or "inescapable" and those who argue that all forms of behavior that are common among human beings are made by human beings, learned in early childhood, and are potentially changeable through political action or education.