Whirlysplatt
Werner Heisenberg "Science and Religion" 1927 on Niels Bohr 
Niels closed the conversation with one of those stories he liked to
tell on such occasions: "One of our neighbors in Tisvilde once fixed a
horseshoe over the door to his house. When a common friend asked him,
`But are you really superstitious? Do you honestly believe that this
horseshoe will bring you luck?' he replied, `Of course not; but they
say it works even if you don't believe in it.'"
Are you hanging horseshoes, have you got a rabbits foot etc and do you believe it improves your luck, If you don't do you cross your fingers anyway sometimes
Niels closed the conversation with one of those stories he liked to
tell on such occasions: "One of our neighbors in Tisvilde once fixed a
horseshoe over the door to his house. When a common friend asked him,
`But are you really superstitious? Do you honestly believe that this
horseshoe will bring you luck?' he replied, `Of course not; but they
say it works even if you don't believe in it.'"
Are you hanging horseshoes, have you got a rabbits foot etc and do you believe it improves your luck, If you don't do you cross your fingers anyway sometimes