I hate screamin' bounders. Give me a nice dribbler, or fly ball anytime. Heck, even throw in a fielder standing on one side of the line and touching a fly ball on the other side of the line, I don't care.
Point is, them are tough, no reaction time to get the 'best' look, so like Marty said, we use our gut. And if blue happens to subscribe to the 'expected call' philosophy, his gut will say foul ball without so much as a thought process. If blue 'calls em like he sees em,' on a screamin' bounder, he's guessing anyway.
And to think, I formed this opinion with relatively little experience. Now you all can tell me what you think of my opinion
Phil