The section the story is about, with its two surfaces measured

A NACA 2412: two per cent camber at four tenths of the chord, twelve per cent thick. Its upper surface is 1.215 per cent longer than its lower one, and that number is the whole of the equal-transit story's input.

4 essays call wrong-picture. The drawing above is what it returns with no arguments at all; every call below passes it something, because a placement that passes nothing draws whichever member of the family the generator happens to default to rather than the one its essay argues about.

It is also the blast radius. Changing wrong-picture changes every figure listed here at once, and on this site it may change what they assert as well as what they show — which is what has to be rebuilt and looked at before the change is believed.