Well, I was not about to say no. I had sort of meant to get out of Prague for a day or two over the weekend, but hadn't managed to formulate any plan regarding where, so this sounded like a nice break in my routine.
We met this morning at a cafe and had a nice chat. I was mildly tempted to join him in a trek to the castle, but I do tend to avoid going up there (the crowds) and as it happened, a friend of his from Tunisia had just gotten to town and presumably did want to see the castle.
Instead, I spent a few more hours contemplating the various items that constitute Edice 69 and then went out on a sort of exploratory mission regarding the Smichov area, of which more later when I go again with camera.
I should add, though, that I hope my new acquaintance will post some of his photos of the anti-missile demonstration that took place last night here. You can read what he's already written about the topic here. I'm afraid that yesterday I was in too much of a stay-at-home mood to go anywhere, much less find out that I could be participating in a big demonstration.