That's incredible, it's almost as if it's partly psychological!

Of course you can. People do, every year. The seasonal flu jab should provide immunity to the strain of flu that is thought to be the most common that year. That doesn't mean to say you won't catch another strain of flu which can make you ill as you haven't had a vaccine against that strain.

I don't agree with such a sentence for armed robbery, apostasy or rape either if I'm honest.

fantastic

I like the guy, of all the guitarists the GNR lineup has had post Slash, he's the one who comes closest to replicating Slash's playing in the live environment. I think technically he seems to be pretty competent at anything that's thrown at him.

As for song writing who knows, either he's not a good writer or nobody who matters cares to listen to what he has to offer. For me the second option seems less likely than the first.