There are four or five things an active eye should be able to see instantly. Dramatic changes of speed, direction and colour are not too hard to note. Good moments go along with changes that come with the seasons too. We should be able to detect long-range changes and very slow changes later. It helps us to stay intact or in tune with where we live, in part.
Many occurrences come our way out of seasons or have nothing to do with it.
It could be a scratch on your face or a bump on a log. And be on the outlook for what's handy and professional, somehow. Many of the factors glide into each other. Bearing that in mind, we should try to convert a lot of them into an image for our mind to see by and recall - to draw on later. Preferably we try to determine what it is we re looking at before we say anything.