Human brain: ~100 trillion synapses
The human brain has approximately 100 trillion synapses, while frontier AI models currently have around 5 trillion parameters — a 20x gap.
Similar snapshots
Twins with Alzheimer's: up to 10-15 years apart
Studies of identical twins raised in the same environment show one twin may not develop Alzheimer's for 10–15 years after the other, highlighting the role of epigenetics and individual brain differences.
Data point
12M
Dr. Keltner cited research indicating humans have approximately 12 million scent receptors in the nose that help us navigate and interpret the world.
Eight wonders of awe
Research identified eight universal sources of awe: nature, moral beauty, collective movement, visual art, music, compelling ideas, and the life cycle.
Paradigms don't die, people do
Feldman referenced Thomas Kuhn's insight that scientific paradigm shifts only happen when incumbent thinkers die — a cycle AI is now compressing by accelerating learning across the equivalent of thousands of generations.
100B galaxies × 100B stars each
There are at least 100 billion galaxies in the observable universe, each containing hundreds of billions of stars, making the existence of intelligent life elsewhere overwhelmingly probable.
Data point
6,000
As of recording, astronomers have cataloged 6,000 exoplanets just in a tiny search radius around our Sun — first discovered only in 1995.
Data point
95%
Everything humanity knows — biology, chemistry, physics, food — accounts for only 5% of what drives the universe; dark matter and dark energy make up the rest.
Black hole spaghettification
Tidal forces inside a black hole stretch a human body head-to-toe, then snap it into pieces — bifurcating 1 to 2 to 4 to 8 — while simultaneously extruding them through spacetime like toothpaste through a tube.
Data point
50,000 yr
At the speed of the fastest spacecraft ever launched (New Horizons), it would take 50,000 years to reach Alpha Centauri, our nearest star system.
