A pen and paper lesson on the basics of Machine Learning as seen through an application at Khan Academy.
How circumcision came to be and how it got to where it is today, despite having no real evidence of medical benefits! Also some clarifications on female circumcision and mutilation.
Brief notes to complement slides: Circumcision essentially started as a random trial attempted to cure a boy’s walking problems. Somehow it actually worked, and it took off from there. While thereafter it was shown to not work for curing any ailments, it did prove to reduce masterbation, and due to religions it became a prescribed procedure.