This is an enjoyable and readable book, although forced into a somewhat contorted shape by the author's choice to leave all texts produced by the Roman elites strictly alone, which leaves him with a very constrained selection of 'inscriptions and papyri, and [...] admittedly problematic insights from fiction, fable, Christian sources, fortune-telling and magic', not to mention the chapter where he just straight-up talks about 17th century pirates because there are good sources and he thinks they were pretty similar to Roman pirates as far as we know and come on,
pirates, who doesn't want to read about pirates? I have to admit, I
did enjoy the pirates.