My concern about Calico and the other commercial efforts at aging research is, will the tools and data they develop be made public so that others can build on them? Also, supposing they succeed, I find the idea of commercial ownership of a (real) anti-aging drug morally repugnant in the extreme, perhaps even dystopian. But I certainly can't deny that Google has informatics experience.
SENS, as I understand it, can mean (at least) 3 different things:
a) The idea that we should focus on root causes rather than late-stage manifestations. I agree with this.
b) The idea that we should attempt to repair aging-related damage without needing to know what caused the damage. I find this debatable. We have stumbled on to some big treatments (aspirin, penicillin), without knowing how or why they worked. But in general, if you take a broken, complex system (e.g., a car, some source code) and attempt to repair it without understanding how it works, you will fail. With aging, many changes occur. How can you determine which changes are "damage" and which are compensatory regulatory changes without understanding the chain of causation?
c) A specific list of 7 aging-associated markers of damage and proposals to clear that damage, with the implication that if we do so, we will drastically reduce or eliminate age-associated morbidity and mortality. This is the part that is seen as hokum. At best, it is a hypothesis. Let de Grey get a grant and prove it, like everyone else does, rather than publicity-hunting and implying that it is only the stodgy old aging research establishment keeping us from eternal youth. But if you want semi-technical criticisms:
- On what basis are these 7 types of damage chosen and not others?
- One of the proposed treatments for the natural shortening of telomeres over time is the periodic, whole-body addition of telomerase or the equivalent. Considering that telomerase is overexpressed in cancer and is an important ingredient to uncontrolled cell division, do you think this is a good idea?
- On a related note, SENS presupposes that a cure for cancer must be found before the entire program can be made practical. A minor problem.
- The technology for several other of his other proposed interventions does not currently exist; for example, expressing mitochondrial genes only in the nucleus.
Anyway, I actually share SENS' goals but not its unwarranted confidence in its specific proposals to achieve them.