On 2009-05-05, Mark Woodhouse wrote:
I can't speak for how V does things, and I don't do STWT, but I've used similar methods in freeform-y games. My experience is that the latter is really tough to use - it tends to lead to long, intensely entertaining, digressions into armchair worldbuilding rather than play. That may just be my tables, though. I like to have a mechanism for invoking cloture on those back-and-forths.
My usual approach is "here's how I think it ought to work, any questions/comments?" and if we can't come to a quick consensus I just make a call and move on.
Vincent's "umpire" analogy is really spot-on. Video review happens at the next break in play, not right away.