Horizontal comparisons are about the features of a business, as in the Rover-Uber analogy. Vertical comparisons are about the logic of a business decision.

Re "A history lesson," Opinion, Oct. 21 Once again we are treated to David Gelernter's twisted logic.

Moreover, challenging a widely held view, Professor Brewer uses this model to argue that legal reasoning by analogy, like analogical argument in logic, mathematics, and the natural sciences, can have ...