"Once these things are possible, you know that it's the start of a new era"
29 Jul 2025 · 1 min

0:49
Lenny Rachitsky proposes a concrete test for transformative AI: if a machine can replace a hired worker with no loss to the job, it passes. When machines pass this test for roughly 50% of jobs by monetary value, we've entered a new era with massive GDP and societal effects.
Questions this video answers
One month or three months.
About 50% of jobs (weighted by monetary value).










