In astronomy, parallax is the apparent displacement of a celestial object depending on the point from which it is observed. This discrepancy is not a measurement error: it is the measurement. There is no other way to establish a distance.
These articles proceed as follows. Each subject is observed from two distant positions — that of the financial direction, that of the system architecture. Taken alone, each produces a coherent and false view. Confronted, they produce a measurement.
The texts are long, sourced, reviewed by practitioners from both sides, and free. They do not seek to convince: they seek to situate.