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It depends on a lot of factors. If medical nanobots to reverse aging are created tomorrow, I would not expect your avg 60-year-old to survive long enough to get access to them.

Why?

Health care for the elderly is insanely expensive. Add in the cost of Social Security.

I would expect both the insurance companies and the government to push for access.

Economics of scale, the world is big.

>The newest EUV machines are state of the art producing the smallest feature sizes in nanofabrication and costs > $350m a piece. There are a few hundred of previous versions in existence in the world and lead times for the old versions are 12-18months. This tech is currently used to spit out semiconductor wafers before they're chopped up into chips, a large fab might produce 250k wafers a month.

You're going to need a high-tech manufacturing stack like semiconductors to manufacture your nanobots. It will take decades to ramp capacity, available capacity will land in the hands of the highest bidders. Also, 60 year olds trying to stay alive will be competing for the retail product with 30-year Olds trying to look like they're 20 years Olds.

I don't think it will take decades. I forgot the reason but let's come back on December 31st, 2039, and see how far nanotech has come.

How are you counting the number of calculations a second a brain does?

What's LEV?

Life expectancy escape velocity, the point after which people will start being functionally immortal thanks to the adjacent advance of tech

I'm only aware of 1 pathway that can improve extant nanofabrication, and that has gone nowhere in 30 years. There were easier ways to make money.

I expect AGI will solve aging. It won't involve nano bots.

Longevity Escape Velocity.