Oh my GOD!! Did I make a typo! OH mY!! I made a mistake! How terrible!!!!! I guess you could never have guesses that I meant Difraction. How could anyone guess that? Impossible!!!
There's too much difference between the two words - refraction / diffraction as to suspect just a typo.
If it's about guessing, why don't you just use wildcards and write *fraction. Would be very Pentax*ist.
cheers, caveman
