Uploaded January 2026 | Updated September 2026, 15 hours ago

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Julian Barbour’s course "Complexity in the Cosmos" is now 70% off. But hurry, the offer ends 7 January 2026.

Get 6-month access for $16.50 (down from $55), or $3.30 for your first month on a subscription.

USE CODE YOUTUBE70: qacademy.fqxi.org/offers/qw2JLfZ7?coupon_code=YOUTUBE70