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I agree age is interesting factor.

The age pyramid is very interesting. I would be interested in knowing what is the steemstem one in general :)

A google form is easy to make and can be present in Distilled.
I think this age range is representative to an extent for the full group, from what I interact as a mentor.. and to all Steemit in general. Young people, the Early Adopters, with everything that this implies (including the lack of trust in the platform and lack of persistence or sudden flight).
SteemSTEM and Steem in general is in what is called pre-takeoff phase in Economic Development:
https://en.wikipedia.org/wiki/Rostow%27s_stages_of_growth

Rostow's stages of growth
Rostow's Stages of Economic Growth model is one of the major historical models of economic growth. It was published by American economist Walt Whitman Rostow in 1960. The model postulates that economic growth occurs in five basic stages, of varying length:
Traditional society
Transitional society
Take-off
Drive to technological maturity
High mass consumption
Rostow's model is one of the more structuralist models of economic growth, particularly in comparison with the "backwardness" model developed by Alexander Gerschenkron, although the two models are not mutually exclusive.
Rostow argued that economic take-off must initially be led by a few individual economic sectors.

Yeah, we may want to do that at some point... Tagging @suesa (I have really no time myself).

Will put something together