Nobody ever has any doubt about a where a ball landed? Like no one ever thinks, "I'm 40% sure it was out, 60% sure it was in, so if my partner was confident enough to call it out, that's good enough."
I think you should only speak up if you're over 95% sure that the ball was good.
Everybody here thinks it's black and white, that you positively KNOW what every shot was.
I strive not to laugh at human actions, not to weep at them or to hate them, but to understand them. - Spinoza