Both pg and I have studied philosophy, not that I'm comparing myself to him, but I am sure we are both well versed in ancient and modern philosophy, him 30 years ago and me 15 years ago. Probably both had more exposure than you to all the different philosophers, unless you also did Philosophy at uni?

So, no, we're not just talking about the old white bearded guys from Greece.

For me, reading that essay crystallized what had been nagging me about philosophy when I studied it, all the different forms felt the same, the arguments sounded the same but I couldn't vocalise why.

As soon as I read that essay it was obvious.