Vitalik Buterin (@vitalik.eth): [Farcast] One important property for kids is minimum population size.

[Farcast] One important property for kids is minimum population size. Eg. if you assume balanced age distribution (first approximation: 1% for each age from 0-99), then to get 10 kids within a 5-year age range, you need 10 / 5 * 100 = 200 people I worry about a network effect problem where if there aren't enough kids then other families don't come, and it falls into an equilibrium of zero. One way to fix this is for the node operator to take on the risk itself, and hire a full-time teacher for the node. Whichever kids are there, share that teacher. And so if there's only <5 kids, they basically get a private tutor.