Paul,
Thanks for these comments about determinism and distribution.  I think 
your analysis is right on, and we will keep it in mind as our 
distribution story matures.
Just in case it isn't obvious to everyone on the alias, I would like to 
point out that being able to represent a behavior tmeough time and 
theough events greatly reduces the need for instant-by-instant 
synchronization that is needed when animation and reactivity are 
controlled by opaque, unpredictable imperative code, which makes 
analysis of future behavior intractable.
	- Conal