20 years ago I drove home after work one night in thick ground fog (12 meter visibility, forced to drop speed to 45mph). There are four bridges I cross on the 12-mile stretch of highway I drive every night, but on that night I crossed over FIVE bridges.
Sure, the obvious solution is I miscounted.
But it threw me because we get this thick fog enough that counting the bridges, which is how I calculate my turn-off while mostly blind, had become routine.
Miscounting bridges in zero visibility bugs me more than the extra bridge, but if there WAS an extra bridge I feel cheated that this would be my lone paranormal experience and not something more dramatic.