--George McC 03:05, 11 January 2007 (PST)
I enjoyed reading (most of) your paper - I say most of because whenever I see lots of equations I have this terrbile urge to turn the page and get to the next bit!! Sheer laziness on my part and doesn't reflect at all on the quality of the paper! I now need to go back and read the bits I missed!!
Anyway, accepting that I may have missed it somewhere - how do you deal with the concept of alternative plans? In my domain there is an "as-is" state that represents the "now" and there are a number of future "will-be" states that represent alternative "futures". Only the shortest time-frame plans will have no alternatives.