"Impossible Journeys" by Mathew Lyons is an irritatingly patronising book. Too often he treats his subjects as gullible fools. His main aim seems to be to mock and make fun of their endeavours from a viewpoint of superiority.
Which is a pity, because the stories Lyons tells are fascinating. The principal actors deserve better than Lyons' putdowns.
The people he writes about were no less intelligent, or more gullible, than ourselves. By and large, they were the product of their times with its attitudes and state of knowledge. Who can say which of our own firmly-held beliefs will be held up to ridicule for their naivety centuries hence?
A far more interesting and worthwhile book would have been to explain why these people believed and acted as they did in the context of their times. There would be a rational explanation for every "ridiculous" fact that Lyons recounts. So people believed that barnacle geese grew on trees. Tell us why, don't just mock it.
If you can ignore the jocular style and focus on the wonderful stories, the book is worth reading.