[MD] Quick one: causation

[craigerb at comcast.net]

[Ham]
> Clearly, desire and preference are exclusive to psycho-emotional subjectivity.  

Pirsig has developed a more unified theory: iron filings prefer movement towards a magnet
in the way inorganic things prefer; a heliotropic plant prefers movement toward the sun in
the way biological things do; people prefer success to failure in the way people do.
Craig