The rationalist and effective altruism communities overlap to a considerable degree, and do engage with the goal of radical life extension through the development of rejuvenation therapies, but not to the degree that I think would be rational. The only rational use for excess capital in this day and age is purchasing an acceleration in the development of rejuvenation biotechnology, on the grounds being alive and healthy enables all other options. That acceleration can be achieved through philanthropy, via support of the SENS Research Foundation, Methuselah Foundation, and similar organizations, or via investment in startups focused on the development rejuvenation therapies. But it can be achieved, and that is perhaps the point that hasn’t yet sunk in in a large enough fraction of people.
As our ability to affect the aging processes has been dramatically improved within the past decade, now is an excellent time for rationalists to consider new evidence regarding the necessity and feasibility of rejuvenation biotechnology. The amount of harm caused by aging is immense from a human standpoint. It is, by far, the greatest threat to living people today, even in the