11^6/13 as rational multiple of pi

[Mark Spahn]

https://www.youtube.com/watch?v=7LKy3lrkTRA

A commenter writes:

Plot twist: It's a deliberate bug in the code to quickly check if a competitor just ripped Casio ROM and used it in their calculator. Similar to the non-existent streets on maps.

Another presentation with an overmanic presenter:

https://www.youtube.com/watch?v=ytfCdqWhmdg (Bertrand's Box, Monty Hall problem)

Bayesian thinking = changing your estimate of probabilities based on newly acquired informaiton