Bit of a tangent, but that was a view popularized by Kurzweil and is very poorly supported. The reason is that life expectancy increases over the past are overwhelmingly driven by decreases in childhood mortality. Look at more or less any sample of humanity in the past that was free from the direct effects of war/famine, and you find life expectancy for those who reach adulthood to be extremely comparable to modern times. For instance the Founding Fathers are a simple people often find surprising - with some even living on into their 90s. People didn't just drop dead at 40, but rather when one person dies in childhood and the other in his 80s, you end up with a life expectancy of around 40.

The thing about life is that you're doing awesome, then you hit senescence, your body starts shutting down and you're going to die. As Warren Buffet recently put it in his final letter to shareholders, "When balance, sight, hearing and memory are all on a persistently downward slope, you know Father Time is in the neighborhood." He's perfectly healthy for his age, a multi-billionaire, and is not long for this world. It's how elderly people can seem to be in amazing health, and then 6 months later they're dead 'of old age'.

So life expectancy zoomed way up until the point that a newborn started to be able to reach around that age of senescence, but then gains started rapidly plateauing. And this makes perfect sense. We'll see global life expectancy continue to increase as more people are able to hit those years, but it's not really significantly moving, hasn't for millennia, and there's no real reason to think that's going to change.

All the new tech gods will eventually die of cancer due to prop 65 (thanks California.)