The Illinois Bar exam and the natural law

Brian Potts writes at the Madison County Record:

In truth, however, the most ubiquitous substantive word is likely exactly what we should expect it to be: “reasonable.” This fact is a great testament to the natural law foundation of our human-made laws . . .

Positivism, to the contrary, generally holds a human-made law to be valid and just simply if it is made by a human with the power to enforce it. Sheer will, not universal reason, rules.

Bar exam preparation materials belie positivism, and indicate our human-made laws are based upon the natural law . . .