Can you be at a level of development?

My new article at Integral World, edited from this FB thread. The introduction:

It seems common in integral circles to stereotype people by claiming an individual resides at a specific developmental level, as if someone fits easily into one category. Granted the AQAL model allows for different domains or lines to be at different levels, but nonetheless in each domain the claim remains that said domain is at a specific, measurable level. In addition, there is the concept of a center of gravity (COG), generally associated with the self-related or ego line, as it is apparently the organizing structure for the other levels and lines. But there is ongoing debate about the COG in developmental literature, so some empirical research follows by other developmentalists not so enamored.