Well, every video on YouTube says it is a big no-no to put one's index finger on the back of
the knife while cutting. So I spent last couple of month slapping myself on the wrist so to say.
And yet, I just watched a documentary about Japanese sushi chef, and everybody is doing
exactly that. (They also have this technique when they would do a half cut and then knock
on the back to finish it.) Is it because they cut fish and it is all control and no power?