It depends fairly significantly on how you draw the boundaries; I think anywhere between 30 and 50 is defensible. (For the growth numbers I chose one specific but arbitrary way of drawing the boundaries, I expect you’d get similar numbers using other methods of drawing the boundaries.) Note this does not include everyone working on safety, e.g. it doesn’t include the people working on present day safety or adversarial robustness.
It depends fairly significantly on how you draw the boundaries; I think anywhere between 30 and 50 is defensible. (For the growth numbers I chose one specific but arbitrary way of drawing the boundaries, I expect you’d get similar numbers using other methods of drawing the boundaries.) Note this does not include everyone working on safety, e.g. it doesn’t include the people working on present day safety or adversarial robustness.