It's not the part whether one knows or doesn't know the url fascinates me: it's a professional setting, where people are quite used to solve problems much more complex than figuring out what's the url. For me it's the thought process: What's the url? I don't know.. error... error.. error. The equivalent of this is if I'd say to someone I've read a great article on Financial Times website,and they'd reply with: sorry, I can't read it,I don't know the url..

Isn't it also the kind of thing that large organizations self host? Sure they could have probably found it with a search engine, or some employee reference, but asking someone isn't a huge deal.