TTKWQ Chapter 1 Part 1
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Movie trivia: An interesting trivia game is figuring out an actor’s Bacon Number, that is, how many degrees of separation are they from acting in a film with the actor Kevin Bacon. If an actor has directly been in a film with Kevin Bacon, their Bacon Number is 1. If they’ve never been in a film with Kevin Bacon but have been in a film with someone who has a Bacon Number of 1, their Bacon Number is 2. If they’ve never been in a film with Kevin Bacon or someone with a Bacon Number of 1, but they’ve been in a film with someone whose Bacon Number was 2, their Bacon Number is 3, and so on.
A similar game is figuring out someone’s Erdős Number, except, instead of movies, you find the degrees of separation of people who have coauthored academic papers have with mathematician Paul Erdős.
One of the more obscure accomplishments is having an Erdős-Bacon Number, that is, being an actor and listed as coauthor on a paper. The two most famous actors to currently possess an Erdős-Bacon Number are Natalie Portman (with a combined score of 7) and Colin Firth (with a combined score of 6).