What are these IBM 'thingys'

[William Donzelli]

> I recall decks of cards that were used to identify plants, birds,
> etc.  Holes along the edges; you inserted knitting needles according
> to observed characteristics and shook the deck.  The cards left on
> the needles (or maybe the ones that fell out; I can't recall) were
> your candidates.

Yes, that is the idea. Apparently the women that used to do this were
very fast, and could do a sort in a blink of an eye.

--
Will