[paganel]

> Can I use it, for example, to take an informed choice about the real world?

I might remembering it wrong, but I think one of the main questions asked by Socrates was "how can we be good persons?". And "what does 'good' mean?". That question absolutely does inform my every-day choices about the real world, because me not being a religious person and not believing in the after-life and such I base most of my every-day thingies on thinking if what I'm actually doing is "good" or not. Asking yourself that is a philosophical question. That and a little bit of Kant, and his "people should never be means to an end".