A less-than-successful deer hunter doesn’t sweat those details. A hunter may know he or she saw three bucks last night from a hunting stand good for a west wind. But they don’t note the wind direction was actually WSW when they saw the deer, and they didn’t notice that every one of the bucks entered the food source on a different trail, but from the same direction, because they were quartering downwind to more efficiently check for scent. When that hunter returns the next time to hunt when there’s a west wind, they won’t realize the reason they didn’t see any bucks is because the wind was due west and discouraged the bucks from approaching in the same manner. Are those extremely subtle details? Yep. But they matter.