What is most likely the author’s reason for spelling “sivilized” incorrectly?

catherine roberts for ignoring me

one is a red flower, and one is the sky when the sun sets.

one of the central themes of edward abbey's work has been his staunch opposition to the glen canyon dam on the colorado river that created lake powell, destroying stunning scenery and wildlife habitat, endangering many rare species of fish and animals, and also irreparably destroying many important archaeological sites which provided information about the early inhabitants of the united states.