Sure you can! He's not there with you is he? So what can he do about it? It comes down to hearsay after that!

Yeah I suppose back in the dialup days it was useful, but only a little. Now I don't see any need for it.

You might not agree if you had to load all the images, styles and scripts every time you opened the page. :P

But still yeah, it's possibly more useful from the perspective of reducing the load on servers.