Nice to see George Church advocating a SENS view of aging research more prominently these days - that the scientific community should be trying to reverse the progression of aging, not just trying to slow down that progression, for all the obvious reasons such as the one quoted below. More of the eminent researchers who support SENS (Church is on the SENS Research Foundation advisory board) need to do this.<p>"[Reversal of aging] is a much better target, in any case, than prolonging longevity because, A, it takes years to decades to even prove that you have extended longevity. Also, if you’ve done it on somebody that’s quite old, the economic consequences are dire; that’s the part of your life where you spend huge amounts on medicine and don’t improve the quality of life tremendously. If you can reverse it to an age where you essentially don’t use any medicine, this will be much more cost effective."