[Doctor Stochastic]

Perhaps when our ancestors were swinging from the trees, those that didn't have good gravity-motion-vision etc., didn't manage to become our ancient ancestors.

[Alamo-Girl]

Thank you for your post!

Perhaps when our ancestors were swinging from the trees, those that didn't have good gravity-motion-vision etc., didn't manage to become our ancient ancestors.

Indeed. But isn't it ironic that pilots who fly "by the seat of their pants" are less likely to survive to bear children than pilots who trust their avionics?