Boffins have worked out why flies are so good at avoiding getting swatted.
"They think the fly's ability to dodge being hit is due to its fast acting brain and an ability to plan ahead."
What a surpise! I thought it was because they were telepathic ;-)
Actually it's quite an interesting article, and it does explain something that was puzzling me. I couldn't understand why I've been able to creep up and get so close to all these bugs to photograph and film them and they don't seem bothered, even when the camera lens is only 1cm away. The reason is that they are unable to register slow movements.