thetechblock writes: "I was hanging out in downtown SF the other day, and of course I had to visit the Apple Store to play with the new iPad Mini. Everyone pretty much ignored the all-new New iPad (let’s refer to it as iPad 4), while there was a 3-deep queue to play with the mini. I even seriously considered buying one on the spot (pending availability). So why are people going gaga over the mini, when the iPad 4 is actually a much bigger refresh in terms of hardware? (iPad 4 is a generational leap in both CPU and graphics performance)."
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"