In this Veritasium episode, Derek Muller uses interactive simulations to explore the “six degrees of separation” concept and the math behind small-world networks. Along the way you’ll see how network shortcuts and weak ties make it surprisingly easy to link anyone in just a few steps, how hubs emerge through preferential attachment, and even how diseases (or ideas) can spread at lightning speed.
Featuring insights from Duncan Watts, Steve Strogatz and Albert‐László Barabási, the video ties it all together with a dash of the Prisoner’s Dilemma, showing that our individual choices can ripple across these networks and change the world.
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