How A Random System Can Actually Be Predictable

Veritasium · 1:50

2,060,097 views · 66,554 likes · Jun 8, 2026

The balls in a Galton board fall down randomly. Any time they come to a junction they can take any number of paths and it's almost impossible to accurately predict every ball's trajectory.

However, the system as a whole is predictable.

How can this be? How can random systems actually be predictable?…

The balls in a Galton board fall down randomly. Any time they come to a junction they can take any number of paths and it's almost impossible to accurately predict every ball's trajectory.

However, the system as a whole is predictable.

How can this be? How can random systems actually be predictable?…

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