Re: Indeed
The issue with the idea that a hangover is tied to learning not to overindulge, drink a particular thing or whatever is that it is too far removed from a particular behavior. In order to make the connection strong enough to matter, the hangover would have to start very soon after drinking. Obviously, this is not the case on any level. Puking is more likely to cause an individual to learn they've done a very bad thing to their body (via the Garcia effect), but they are much more likely to recall that connection when they are drunk enough that it is too late rather than at the beginning of a potential binge.