When I and Mrs D hit the subway station in the morning, there are two turnstiles (plus the manned one for cash fare a bit further off). One has a metropass and a token mechanism, the other one takes tokens only.
I have pointed out to my missus that by going ahead of me and putting in her token in the dual-mode one, it holds me up as I can't use the other one for my metropass.
Her answer is that she's left handed and naturally goes for the one on the left. Queueing theory assumes that all options are equally attractive - it doesn't account for the human element!
(now if the cheapskates at TTC would only retrofit a few more turnstiles given the huge increase in metropass sales, that'd be nice too.)
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