colanderman: Yes, I understand the analogy you're making. Your example of a pixel "meant to represent a perfect square, not a circle" is accurate: that is one

colanderman: Yes, I understand the analogy you're making. Your example of a pixel "meant to represent a perfect square, not a circle" is accurate: that is one type of information that gets discarded with this approach. Another type of information that gets discarded is complex/subtle color gradients/variations. Taken to the extreme, yes, this approach can make photos look like stylized comic-book drawings; but with sensible defaults, it produces resolution-independent images that look great (such as the example with the dolphin) even if those images actually contain LESS information than a JPEG at the same file size. We'll have to wait and see...