Many things are supposed to be good or bad luck, but are we gaining or losing something by playing along?
A breakdown of the most superstitious demographic groups - http://therapyevanston.com/2010/10/who-is-superstitious/
An article extolling some of the fun that can be had in apophenia - http://www.psychologytoday.com/blog/reality-play/201207/being-amused-apophenia
An interesting study about how superstitions can actually help people focus on performance - http://soco.uni-koeln.de/files/PsychS21_7.pdf
Any discussion of superstition would be incomplete without a reference to Tim Minchin’s poem “Storm” - https://www.youtube.com/watch?v=HhGuXCuDb1U
Matthew Crist’s response to THUNK - 35. Health Care Crazy Talk - https://www.youtube.com/watch?v=qaayoW4E9x4
The report on existential risks highlighted by Samuel Stringman - http://www.fhi.ox.ac.uk/gcr-report.pdf