[kobeya]

> While we probably won’t make big improvements in aging

Why? Ageing is molecular deterioration. In fact, all disease can be described as not being in the place they need to be or the structure/configuration they need to be.

Right now we have very few tools able to do anything more than assist the body's self-healing capabilities (including e.g. vaccines "training" the immune system) or some targeted biochemical attacks, or providing missing molecules. These are powerful, but it's like trying to fix an intricate detail while wearing boxing gloves. Actually, it's like the same metaphor but with boxing gloves the size of a city block.

In the coming decades we will develop molecularly precise tools able to manipulate individual molecules in-situ. I expect that at that time it will become quaint to talk of "ageing" rather than an amalgam of age-correleated diseases that are each addressable by molecularly precise treatments available for a price. A complete cocktail of treatments, which would take maybe a century to develop, would take any elderly person and give them a biological age of 25 with perfect health.

There is no biological reason why this is not possible. And every year we get closer to achieving molecular-scale tools.