Fermi estimation: If you eyeball power of 10 at the top and bottom of a fraction. The over and under estimates tend to cancel out and you will end up with a su

Fermi estimation: If you eyeball power of 10 at the top and bottom of a fraction. The over and under estimates tend to cancel out and you will end up with a surprisingly small logarithmic error. More videos: Kyle Hill: https://www.youtube.com/watch?v=INlPbfBGPtw https://www.youtube.com/watch?v=INlPbfBGPtw Some random talk/lecture: https://www.youtube.com/watch?v=EMQd-AYb1fs https://www.youtube.com/watch?v=EMQd-AYb1fs More articles: - Trinity Test Eye Witness Report by Fermi: https://www.dannen.com/decision/fermi.html https://www.dannen.com/decision/fermi.html (Last HN discussion: https://news.ycombinator.com/item?id=14480550 https://news.ycombinator.com/item?id=14480550) - Wikipedia: https://en.wikipedia.org/wiki/Fermi_problem https://en.wikipedia.org/wiki/Fermi_problem Some random lists of Fermi Problems I found: - https://navajomath.math.ksu.edu/wp-content/uploads/2015/03/fermi_questions_handouts_and_lesson_plan.pdf https://navajomath.math.ksu.edu/wp-content/uploads/2015/03/f... - https://www.physics.umd.edu/perg/fermi/fermi.html https://www.physics.umd.edu/perg/fermi/fermi.html The only prerequisite for being good at Fermi Estimation is memorizing/getting and intuition about the world around you, and knowing what exactly you are trying to estimate.