...Complexity
Work supported in part by the Kennedy Memorial Trust, London.

...interactions
Chaotic systems (in the mathematical sense of the word) which inherently evade prediction can be incorporated into this definition, by allowing the fact that for such systems we know and understand, in a quantitative way, precisely how and when our predictions will be deficient due to inadequacies in our knowledge of the initial conditions.

...event
Most scientists would not deem this nor its associated mode of understanding as a sufficient characteristic of a definition of either `explanation' or `understanding'.

...complexity'
There are of course some completely un-loaded uses of the word emergence, such as to describe the hardness of a rock, or the colour of an object.

...cross
I shall justify this statement later.

...advantage
Especially if the usual time constraints are removed, as in postal chess.

...intelligence
The traditional knowledge-based approaches to AI are based completely in conceptual ideas and `understanding'. My results suggest progress and success by the use of such methods will be harder to achieve than by the use of agent-based and connectionist approaches.

...options
for early discussion on some of these points, see [3][2].

vince@das.harvard.edu
Fri Oct 14 12:38:41 EDT 1994