A center requires margins. It engages in deliberate erasure and ignores certain silences. The practice of centering itself is structured into portraiture as a requirement. If portraiture were about revealing the presence of simultaneous multiple truths it would possess the capability of being reflexive. Portraiture practiced as a science is little more than systematic and structured reductionism.
Scientific method has, after all, a price.
Reducing the potential multiplicity and diversity of simultaneous truths to a singular story line, no matter how compelling or interesting, may be the most important disfigurement of the ensuing portrait placed on the verbal canvas.