Sometimes its difficult to determine whether or not to charge an error. I had one on opening day. Batter hit a liner about 3’ to the right of 2nd and about 3’ off the ground. F4 who was “cheating” toward 1st base a little, took 3 steps and dove. The ball hit his glove right in the center, but it wasn’t caught and dropped straight down. But the time F4 got up and grabbed the ball, it was too late. I score a base hit, the other scorer tries to convince me it was an error.
Rather than argue, I told him in cases like that, I apply the “Clap” standard. IOW, if the play would have been made, would everyone be clapping and hollering what a great play it was. If that’s the case, I won’t charge an error.
Of course it’s a bit more complicated than that, but that explanation seems to appease most people.