Nathan Lambert
Role at the time: Personal public post by Nathan Lambert; not established as an institutional statement.
Challenged the characterization
Responding to
Is Anthropic acting responsibly while advancing toward recursive self-improvement?
"but am still waiting for evidence that supports anything close to a 10% chance of human extinction."
Why we used this label
Challenges the evidence for the forecast, with explicit acknowledgment of safety concerns and later qualification of his rhetoric.