>I think the point is that vetting is a ongoing process and the asbestos example is one were something has been approved for use over a period and then later in its life-cycle found to have enough negatives to make it not be use.
And again, there's just no comparison between the state of science today and the state of science a century ago. For a point of reference, the idea of blinded and randomized trials was a new concept when asbestos first came under suspicion.
The implication that the efficacy of science will improve in the next 100 years comparably to how it did in the last 100 years is spurious. Scientific understanding is being continually refined, but it is not a linear progression. Take the difference between our understanding of the shape of the earth in 800BC vs. 600BC; the model went from a flat earth to a spherical earth. That's a giant leap in 200 years. Then in the next 350 years they nailed down the size of the earth to within about 20% of the true value. An impressive advance, but surely a lesser one. Then, over the next 2250 years, we've gotten a more accurate measurement of the size of the planet, and noticed that it's a bit oblate rather than a perfect sphere. As science advances, the rate of progress slows; that's just how it works.
And again, there's just no comparison between the state of science today and the state of science a century ago. For a point of reference, the idea of blinded and randomized trials was a new concept when asbestos first came under suspicion.
The implication that the efficacy of science will improve in the next 100 years comparably to how it did in the last 100 years is spurious. Scientific understanding is being continually refined, but it is not a linear progression. Take the difference between our understanding of the shape of the earth in 800BC vs. 600BC; the model went from a flat earth to a spherical earth. That's a giant leap in 200 years. Then in the next 350 years they nailed down the size of the earth to within about 20% of the true value. An impressive advance, but surely a lesser one. Then, over the next 2250 years, we've gotten a more accurate measurement of the size of the planet, and noticed that it's a bit oblate rather than a perfect sphere. As science advances, the rate of progress slows; that's just how it works.