[MD] Social level for humans only

[craigerb at comcast.net]

[John]
> I'm completely dumbfounded how greed, lust or mother
> instinct could be construed as biological drives rather than social.  I know
> this is probably Moq heresy

Apology accepted.
There's an interesting experiment: a mother rat is placed on one side of 
an electrified grid.  She won't cross the grid for sex or food, but will if she
has crying pups on the other side.
Totally biological.
Craig