Coming straight ... and going down

A recent scientific study may explain why fielders might struggle with deliveries coming right at them. More in the New York Times:

“Binocular vision is quite good for working out where objects are in space,” said Andrew E. Welchman, the lead author of the study and a lecturer at the University of Birmingham in England. “Because you have two eyes, the brain can take signals from each and compare them over time, averaging them. But when you have an object coming toward you, the differences in the information you get from the left and right side are more subtle,” and this makes the decision on location and speed more difficult.