If a mirror reverses right and left, why doesn't it reverse up and down?
Directionality is a term referring to how human being is able to circumscribe our encounters. I might be in a bad mood over a quarrel with one friend, but can still enjoy being with another friend, since my mood is (non-spatially) localized in my being.

Bees are able to navigate by using the sun as a compass
Honeybees navigate using the sun as their compass.
Alaska is the most northern, western, and eastern U.S. state
A cyborg enhancement called North Sense is a chest-implant that allows you to feel when you face north.
Directionality is the idea that each thing we encounter obviously comes from a specific region, and does not fill up all portions of our existence at once - Fear of making the speech does not also make us afraid of swimming, or make us worry that our house has been burglarized during the lecture trip.
Directionality is sometimes counterintuitive --- If you drive from Los Angeles to Reno, NV, you will be heading west.