Looking at the same subject from sev120 eral sides gives deeper insights into the workings and changing (or unchanging) nature of such institutions.
This can be contrasted with the situation where distant horizons and unchanging vistas dominate, serving to stretch out space and time.
It can refer to a distant unchanging past, as well as to the knowledge, beliefs and practices associated with that past.
Unchanging text fragments are of course the easiest kind to generate; indeed they can simply be inserted in the text as canned strings.
Geographical mobility was not yet widespread and transportation was difficult; communities were stable and unchanging.
Perhaps the biggest problem of all was that the fundamental stock of community song, popular as it often was, was essentially so limited and unchanging.
However, as mentioned, the share of this small state economy in national export-value remained quite insignificant and virtually unchanging.
Unchanging traits with new effects make exaptations, while function-selected trait changes constitute true adaptations.