How do you clear food that sticks to the cutting knife?
even the greatest knife masters will forget every once in a while to clean with the edge in the opposite direction


No, they won't, not after cutting themselves a couple of times. It's natural to cut yourself while cutting food, occasionally, but I have never cut myself while slipping food from the blade.

Always keep the edge away from you, place the side of your finger against the flat of the blade keeping it absolutely rigid and straight, and run your finger down the blade. It's that simple. Using the side of your finger reduces the chance of you curling it around the cutting edge.