knucmo hotmail.com> wrote in
news:ff575952-c519-4d2c-9d7c-5521075e47b3@k30g2000hse.googlegroups.com:

"Social classes" are arbitrary subgroupings of individuals sorted according
to some criterion chosen by the observer, or analyst. They have functional
consequences only when they are defined in law and enforced by the State,
such as the class structure of medieval Europe, the class of slaves in the
US prior to the Civil War (and the Jim Crow laws that followed), or the
apartheid laws of South Africa.

The only "natural" classes among humans having economic consequences, as
among most animals, are the classes of males and females, and those
differences (for economic purposes) are slight.