This overlapping is reflective of hybrid languages, where certain features (phonetic, orthographic, semantic, syntactic) are also difficult to disentangle.

Four properties that stand out as descriptive of behavior at its own level are agency, prospectivity, the search for order in the world, and flexibility.

As [Mahomet] was preaching... there commeth a doue flying towards him, & alighteth vpon his shoulder, and pidleth in his eare, looking for meate, hauing vsed her before to feede in his eare for the same purpose.

[I]s the character and property of the man, who labours for our intellectual pleasures, less entitled to a share of our fellow feeling, than that of the wine-merchant or milliner?