Defective Gods is a novel that takes a not-too-serious look at the way that knowledge (in the epistemological sense) is constrained by the tools we use to communicate.
There are two sets of characters: the first being a group of engineers in 1969 who are building a motorway, and the second is their equivalent who built the linteled circle at Stonehenge at the beginning of the bronze-age, 4329 years ago. Although they cannot directly communicate with each other, they have a shared language in geometry, and they are helped by metaphysical entity who bestows upon them a common appreciation of ‘straightness’, which helps no-end with geometry, and which seems to have something to do with sunlight.
They bump into one another when a giant earthmover for the motorway digs up the Stonehenge chief engineer. It all takes place on the chalk downs of Southern England.