"Trainspotting" is a hobby popular in Great Britain. Trainspotters
hang out by train tracks, obsessively taking down the numbers of
trains passing by, hoping to get a catalogue of all the trains in the
country - or, at least, on a particular route.
Irvine Welsh chose to name his novel Trainspotting because he
saw his characters' single-minded devotion to heroin as similar to
that of the trainspotters.
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