Ok I was going to weigh in on the whole 2D-3D thing, bringing my perspective (so to speak) as a geologist, photographer, wearer of deliberately mismatched corrective lenses and lifelong user of loupes, microscopes and stereophotographic images. In my experience there are lots of reasons to understand why Arrow and Professor have different positions, which stem from both physiology and physics. But it was going to be a page-long post and who wants to spend precious life-giving time reading that. So instead I'm going to say that the Deepak Chopra site that Arrow posted is hilarious. Thanks for that!