The Birthday Paradox

How many people need to be in a room before there’s a 50% chance that two of them share the same birthday? Is it about 180, since that’s around half of 365? Is it only 100? The real answer is surprisingly much, much smaller.

If you have just 23 people in a room, the odds of whether two get presents on the same day is a coin flip. Get 50 people together and that shared-birthday probability skyrockets to 97%. A handful more and it’s a virtual statistical certainty.

Really? Yes, really! With the aid of tiny plastic babies and some mathematics, Kevin proves and visualizes this surprising veridical paradox.

**** LINKS ****

Birthday Attack Example In Hacking
https://www.youtube.com/watch?v=4shxYyV4O_k

Birthday Attack Hash Collision
https://www.youtube.com/watch?v=18ihbf1EqRw

Hashing Algorithms And Security - Computerphile
https://www.youtube.com/watch?v=b4b8ktEV4Bg

Discussion On The Birthday Attack
https://www.youtube.com/watch?v=2bEL3ok8D70

The Birthday Attack
https://danielmiessler.com/study/birthday_attack/

***********

Vsauce2 Links
Twitter: https://twitter.com/VsauceTwo
Facebook: https://www.facebook.com/VsauceTwo

Hosted, Produced, And Edited by Kevin Lieber
Instagram: http://instagram.com/kevlieber
Twitter: https://twitter.com/kevinlieber
Website: http://kevinlieber.com

Research And Writing by Matthew Tabor
https://twitter.com/matthewktabor

Huge Thanks To Paula Lieber
https://www.etsy.com/shop/Craftality

Get Vsauce's favorite science and math toys delivered to your door!
https://www.curiositybox.com/

Select Music By Jake Chudnow: http://www.youtube.com/user/JakeChudnow

MY PODCAST -- THE CREATE UNKNOWN
https://www.youtube.com/thecreateunknown

BetaSeries' opinion

Rediscover the Hilarious World of '=3': A Must-Watch YouTube Sensation

In the vast universe of online entertainment, few shows have made as much impact as "=3". Hosted initially by the charismatic Ray William Johnson, this YouTube web series quickly became a staple for comedy lovers around the globe. With its unique format that combined viral video commentary with sharp wit, "=3" captured the hearts of millions. As it evolved through various hosts like Robby Motz and Kaja Martin, its legacy continued to influence internet culture in profound ways.

The show's inception can be traced back to a time when YouTube was burgeoning with creativity and innovation. Ray William Johnson's dynamic presence and clever humor created an unmatched viewing experience that resonated with audiences seeking laughter and entertainment. His ability to dissect viral videos with humorous insights made "=3" not just a show but a weekly ritual for many fans.

After Ray stepped down in March 2014, Robby Motz took over hosting duties, bringing his own flair while maintaining the essence of what made "=3" so beloved. Although some viewers were skeptical at first, Robby's charm eventually won them over, keeping the fan base engaged and entertained. However, transitions are never easy in long-running shows; when Kaja Martin became the host in July 2015, she faced challenges in retaining viewership amidst changing internet trends.

Read the full article

Next episode

S01E343 - The Missing Dollar Riddle