This May Be The Most Counterintuitive Probability Paradox I've Ever Seen | Can you spot the error?

Video Description

WARNING: If you haven't see this paradox before (and probability isn't your thing), it may seem like math is broken here. I just want to say that it's not and it took me A LOT of thinking to finally see why. I encourage you to watch the video and see what conclusions you come to, but then check out the follow up video (https://youtu.be/ElB350w8iJo), or pinned comment, for more of an explanation about what's going on. STEMerch Store: https://stemerch.com/ What is the chance that a parent has two daughters, given the fact that they have two children, at least one of which is a girl named Julie? Book that I reference (The Drunkard's Walk): https://amzn.to/2TY8ibO See pinned comment for additional information. ►References (note, even some of the sources don't fully agree) https://en.wikipedia.org/wiki/Boy_or_Girl_paradox https://leightonvw.com/2017/03/03/the-puzzling-problem-of-a-girl-named-florida/ https://math.stackexchange.com/questions/2149812/the-two-daughter-problem https://math.stackexchange.com/questions/4400/boy-born-on-a-tuesday-is-it-just-a-language-trick https://science.slashdot.org/story/10/06/28/2221252/the-tuesday-birthday-problem http://allendowney.blogspot.com/2011/11/girl-named-florida-solutions.html Instagram: https://www.instagram.com/zachstar/ Twitter: https://twitter.com/ImZachStar Join Facebook Group: https://www.facebook.com/groups/majorprep/ ►Support the Channel Patreon: https://www.patreon.com/zachstar PayPal(one time donation): https://www.paypal.me/ZachStarYT ►My Setup: Space Pictures: https://amzn.to/2CC4Kqj Magnetic Floating Globe: https://amzn.to/2VgPdn0 Camera: https://amzn.to/2RivYu5 Mic: https://amzn.to/2BLBkEj Tripod: https://amzn.to/2RgMTNL Equilibrium Tube: https://amzn.to/2SowDrh ►Check out the Amazon Store: https://www.amazon.com/shop/zachstar