[vidarh]

It's the opposite: it makes sense practically, because it means a setup that can be reproduced "anywhere" based on pure knowledge, without depending on being able to ensure the continued integrity of a physical object that has been shown to change over time.

Most people can continue to depend on prototypes for calibration, so it does not cost us any complexity in that respect. What we're gaining is to be able to independently re-calibrate multiple prototypes.