Distant Starlight in a Young Universe: Rømer, Maxwell, and Occam

We may freely stipulate the speed of light in any one direction to be anything between ½c and infinity, and the return-trip speed is set by the constraint that the average speed of light must always be exactly c in vacuum (186,282.397 miles per second). We here explore additional objections to the conventionality thesis. These have all been refuted in the technical literature within the past century. But few people have access to such literature, and so a review is expedient.