When Apple raises the curtain on its big show this Wednesday, it’ll unveil the iPad 3, which will almost certainly have a retina display that features a pixel count of 2,048 x 1,536 — a truly amazing spec for a tablet. But is such a high-resolution screen really necessary?

Yes, per usual, Apple hasn’t said word one about what’s going on this week, whether it’ll unveil a new iPad or even if there is a new iPad. But there have been enough rumors, leaks, and logical predictions that the…