What The HELL?!

There's something that freaks me out, it's nothing big or exciting, but it's something that makes me think about:
The warning stamps on each cigarette packet.
I know, pretty weird to think about that, even though I hate cigarettes.
But don't you guys think that warning stamps are quite useless?

I mean...
It is argued that the warning stamps on the cigarette packet have some kind of placebo effect. People who are easy to suggest might be more affected about the consequences of smoking, than others. So, this little warning stamp on each cigarette packet has an influence on people starting to smoke...

So, theoretically it would make sense, if there would be another warning stamp, apart from the real warning stamp, who warns you, that the warning stamp might kill you sooner than smoking itself. But then you would need another warning stamp for the warning stamp from the warning stamp. And that would mean another warning stamp for the warning stamp of the warning stamp from the warning stamp of the warning stamp...
Wow, the more often and deeply you think about the "probably" consequences of a warning stamp, you come to the decision not to touch any cigarette because you are occupied to come to an reasonable solution, how to solve the problem of the warning stamps on the cigarette packs. In the end, warning stamps do their job actually very well...

I am confused. @_@