Could someone explain to me why Erdnase advise to "in-jog the top card of the left-hand packet" before riffling in Blind Riffles nr.1 To retain the top stock(p.34)?
I have always wondered why he had to in-jog the first card in order to have this card to fall on top. I think everybody can do it without in-jogging first. Anyway, I think there is a reason why he was doing it that way.
Can you help me?