The Longevity Escape Velocity Concept

Longevity escape velocity is the idea that at whatever time X will have popularized in technology that will increase the average healthy human lifespan by some number of years. Right now I don't know how fast we're discovering life extension technologies. Can we reach the point where the average extension in life discovered every year is more than one year's time? That's the million dollar question. But we also don't know because we don't know which things we've already like discovered were helped.