What did Carl Sagan predict?

To learn for free on Brilliant, go to https://brilliant.org/tibees/. Brilliant’s also given my viewers 20% off an annual premium subscription, which gives you unlimited daily access to everything on Brilliant. This video takes a look at some passages from Carl Sagan's book 'A Demon Haunted World." Amazon link to book: https://amzn.to/47jc7kQ My book is out now! A Guide To Making Friends in the Fourth Dimension: https://tibees.com/