Oh, I think that a full legal prohibition on tobacco would backfire in startling ways. Smoking even now is decidedly unrational; imagine if it was even more illegal.<p>I get not wanting to be exposed , but the science is still not exactly slam dunk even today, in the same way that even the 1965 Surgeon&#x27;s General report is. The datasets ( which are admittedly very slow and expensive to cultivate ) aren&#x27;t of very high diversity.