What are the motifs in The Mosquito Coast by Paul Theroux?

Technology is a constant motif in the story. Allie Fox's relationship with technology is extremely complicated. There is situational irony in the fact that Fox is an inventor who decries technology as evil. Fox devotes most of his waking hours to developing and refining technology of some sort. Yet, he maintains that technology is evil and should be eliminated. Fox constant derides aerosol cheese, while creating a water wheel, flush toilets and an elaborate bathhouse with hot water in the jungle. While many of these contraptions are useful, but none is necessary. The local residents have survived many decades without such conveniences.