[Hmmm. That raises a question:

What are the rules of science?

What is the rule that allows scientists to construct mind-dependent beings (ens rationis) that are true to the presumed mind-independent beings (ens reale)?

It seems that the mind-dependent being must image or point to ‘the subject of study’, thereby producing a sign-object in the mind of the scientist.

Models provide images.

Experimentation provides indexes.]