A man takes a train to work every weekday morning and a train back home again in the evenings. He always walks from his house to the station in the morning and back again in the evening.
He lives some way from the station, but luckily there is a shortcut he can take down an alleyway that runs between the railway tracks and a tall building. High railings along the side of the alleyway prevent people from trespassing on the tracks.
Like many people, he sometimes leaves home too late and has to hurry to the station to make sure he's in time for his train. Despite the fact that the shortcut would cut several minutes off his walk, he often chooses not to take it, even if this means he ends up missing his train.
In the evening, however, he always takes the shortcut through the alleyway, despite the fact that it's poorly lit.
Can you explain the man's behaviour?
For the sake of clarity, here is a map of the scene:
================ Railway tracks ============= ++++++++++++++++ Railings +++++ | Station | Alley --------- ---------------- Outer wall of high building
The tracks do not pass down or cross the alley at any point, and the man is in no danger from the train at any time.
The man gets onto the train in the normal way, by walking into the station, going onto the platform and then boarding the train when it arrives.
Some mornings, he is more than happy to walk down the alley to reach the station.
The man's behaviour is the same all year round, even in winter, but at that that time of year he is more likely to take the shortcut.
The man's behaviour is unusual: most people would happily take the shortcut in the morning.
Everything in the description is relevant to the answer.