Sufficiency, besides, is defined
And certainly, the surrounding space should adequately and is rather frequent change, but is not too sharp and not too frequent.
Sufficiency, besides, is defined by nature of experience of our ancestors in the childhood.
For example, in the village more than enough wonders suitable the creeping child, dangers and meetings.
During the first sorties it tries everything that to it will get.
It checks the force and dexterity, and also everything that meets to it on a way, and makes idea of time, a place, a form.