traps · paradox
Conjunction fallacy
Extra details can make a story feel more likely than it is.
Which is more likely: the short story, or the short story plus an extra detail?
Bank teller
Bank teller, and in the club
A coral outline is in the club. That person is already in the teller row.
Lock a guess, then fill the rooms.
—This room, teller · both
—Rooms where the longer story was ahead
—What the longer story can do
Anyone who is a teller and in the club is already a teller.
The longer description picks out a piece of the shorter one. It does not pick out a bigger piece.
The longer story was never ahead. When every teller is in the club, the two counts match. Otherwise the teller row is the bigger one.