Y'know, I hadn't even considered that your browser might already have a cached copy of JQuery because of a previous visit to some other site. Like the friend yo

Y'know, I hadn't even considered that your browser might already have a cached copy of JQuery because of a previous visit to some other site. Like the friend you mentioned, the idea of third-party hosting for a critical piece of infrastructure is a non-starter for me. If my site depends on X, I prefer (the illusion of) control over X.