In the early 1900s, an aging Japanese steam train engineer named Yasoichi Hori was growing increasingly concerned about his deteriorating eyesight.
Hori's job relied on his ability to quickly read small track signals at a distance while moving at a high rate of speed. The cab he worked in was at the back of the locomotive, behind a large boiler, which meant that he often had to lean out a side window to catch the signals coming up on the track ahead.
In the small, cramped cab, it was just Hori and his fireman, who was responsible for shoveling coal into the firebox while also keeping an eye on the signals.
Hori's worst fear was missing or misreading a trackside signal, an error that could lead to a catastrophic crash.
Worried that he could no longer trust his eyes, he began doing something odd...
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