Early PLN?

I was cleaning out some old files and came across this:

Ted Spear, the former head of my school, drew it up some years ago, long before Web 2.0 and any notion of a the (slightly self-conscious) term PLN. As you can see, we were discussing the role of middle school in the character development of young adolescents. But the thing looks familiar, doesn’t it?

And why shouldn’t it. PLNs aren’t new, except in name. Isaac Newton had one in the Cambridge library, the university’s curriculum and his mentor and patron, Isaac Barrow; the giants on whose shoulders he stood, as he once quipped to another member of his PLN, the polymath Robert Hooke.

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