Yeah, refraction should be 0-100 (100 is air; i.e. no refraction. I've never seen any difference in refraction in settings 0-100; has anyone else?)

This is not my "second childhood". I'm not finished with the first one yet.

Time flies like an arrow; fruit flies like a banana.

"I'd like to die peacefully in my sleep like my grandfather....not screaming in terror like the passengers on his bus." - Jack Handy