Interesting illusion, but I wonder what is the desirable effect here. I can imagine it being argued both ways: 1. the bar should be animated so that it looks

Interesting illusion, but I wonder what is the desirable effect here. I can imagine it being argued both ways: 1. the bar should be animated so that it looks faster than it really is. 2. the bar should be animated in the reverse way, so that download is actually faster than it seems from the bar, thereby giving a positive surprise to the user.