If the optical corrections do not work, then it's not clear that there are any optical corrections at all. Maybe they're there and they failed, but it seems at

If the optical corrections do not work, then it's not clear that there are any optical corrections at all. Maybe they're there and they failed, but it seems at least as likely that they didn't even try. It has always struck me as unlikely. We build buildings all the time with straight lines, and nobody looks at them and thinks "my house sags".