Regarding the question of whether to work directly on what's important, or to work on extending lifespan given our limited time alive, I think that we should work on what most likely will have the greatest positive impact given our specific circumstances. Ageing is obviously a big problem, maybe the biggest, but unless you have a very good knowledge of biology and can get funding for research, I think you will probably do more good working on some other problem, or working to earn money and then donating it to anti-ageing researchers. Do you agree?
yes