Which connectionism vs which AI?

[Ken Aizawa]

Lev Goldfarb writes (Goldfarb,Tue,18 Dec 90 23:10:55 AST):
>the propositional model cannot
>practically facilitate learning from the environment, i.e. it
>cannot facilitate the discovery of new useful features (new symbols)
>or even the recognition of "primitive" patterns.
 
Don't the Bacon programs by Langley, Simon, Bradshaw, et. al. count as
propositional models ?  And don't they postulate new variables or
constants (new symbols) that enter into laws of nature ?  So, isn't this
a counterexample to your characterization ?
 
Ken Aizawa