Use a speed square.
Very important!
So you got your finger caught in the cut? like between one piece of wood with a cut in it...WTF? Lol....sorry lola...that is odd. I have cut hundreds of yards of lumber, and have never even heard of that one.
only thing i could figure is if she was ripping a 2x for some reason.
if it is on a cross cut, move your hand further from the blade, please lola.