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Quanta Magazine

S2015 E102026

Alan Guth: How Many Two-Headed Cows in a Multiverse?

Episode Synopsis

In an infinitely branching multiverse, says MIT cosmologist Alan Guth, “there are an infinite number of one-headed cows and an infinite number of two-headed cows. What happens to the ratio?”

Next Episodes

What Happens if You Fall Into a Black Hole?

Episode 1

Freeman Dyson: A ‘Rebel’ Without a Ph.D.

Episode 2

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3

Artur Avila: A Brazilian Wunderkind Who Calms Chaos

Episode 3

Manjul Bhargava: The Musical, Magical Number Theorist

Episode 4

Where Did the Universe Come From?

Episode 5

Yitang Zhang: An Unlikely Math Star Rises

Episode 6

Martin Hairer: In Noisy Equations, One Who Heard Music

Episode 7

Maryam Mirzakhani: A Tenacious Explorer of Abstract Surfaces

Episode 8

Subhash Khot: A Grand Vision for the Impossible

Episode 9

Alan Guth: How Many Two-Headed Cows in a Multiverse?

Episode 10

Hiranya Peiris: How to Test If We Live in a Multiverse

Episode 11

How Did Life Begin on Earth?

Episode 12

Fly-Vac: Groundhog Day for Fruit Flies

Episode 13

Why Do Flies Walk This Way?

Episode 14

How Symmetry Shapes Nature’s Laws

Episode 15

James Bullock: The Case for Complex Dark Matter

Episode 16

Nancy Moran: An Explorer of Life’s Deepest Partnerships

Episode 17

Nima Arkani-Hamed's Visions of Future Physics

Episode 18

What Is a Species?

Episode 19

Gabriela González: Searching the Sky for the Wobbles of Gravity

Episode 20

Joan Strassmann: The Woman Who Stared at Wasps

Episode 21

Christoph Adami: The Information Theory of Life

Episode 22

Richard Dawid: Why Trust a Theory?

Episode 23

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