–Are
there visual analogs to these?
•Visual
categories may be simpler(?)
•But
definitions in terms of visual properties are harder.
–Even
if I can define a chair as something one person can sit in, this is far from a
visual definition. Classical theory assumes
ultimately there’s a visual definition, but doesn’t usually try to work it all
out.
–Even very simple visual properties are hard. Try to define “gray”.
–