It remains true, however, that an inconveniently placed railing or sharp corner will not remove itself from the path of a drunkard, even if that drunkard is unaware of the obstacles on the path he has set for himself; in other words, no matter to what degree we are oblivious to the world, it makes its own choices as to how oblivious it will be to us.

Steven Brust (b. 1955) American writer, systems programmer
The Phoenix Guards (1991)