We have reflections! They are even diffracted by the waves in the water.
Ok, the math(s) is bullshit and I'm almost certain that diffraction isn't even the right word but it's a great way of soaking up some of that excess graphics power on iPad2
It's a little sad really, iPhone4 and the old iPad can handle it perfectly well at reduced resolution but I think people are more worried about counting pixels than the quality of those pixels. Of course we could give iPhone4 owners the option to run in pretty-but-standard-res mode or more-basic-but-retina-res mode but people would just get confused wouldn't they?