How much money would it take to engineer biological immortality for at least half of the world's population, within 20 years, with 99% confidence?
If you and I were the only people on the planet, how much money would it cost to engineer biological immortality for one of us?
Which is to say, money is the wrong currency.
How much money would it take to engineer biological immortality for at least half of the world's population, within 20 years, with 99% confidence?