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I like the streams better because a lot of learning happens on the go--the ideas sift and sort in one's mind intersecting with new information and observation. Rather than learning it all at the "event," when streams are introduced it gives the learning a natural flow, a give and-take flavor, time to simmer--essentially preparing the guests for the feast, the event, and then of course there's the after-thoughts, the leftovers, plans for the next adventure.
Learning streams make learning a journey mirroring life--a series of shares, questions, struggles and epiphanies, a forward movement more like a dance, than a march.