[Avery Andrews 930815.2100]
Interesting quote from Dennett's `Consciousness Explained' (pg. 415):
A beaver will cast about quite frantically for something--anything--to
stop the sound of running water, and in one experiment a beaver found
its relief by plastering mud all over the loudspeaker from which the
recorded gurglings emerged!
cited from Wilsson, 1974, Observations and Experiments on the Ethology
of the European Beaver, Viltrevy, Swedish Wildlife 8, pp. 115-266.
(The context shows no evidence of Dennett understanding hierarchical
control systems, but the reference seems worth tracking down...)
Avery.Andrews@anu.edu.au