Building a coffee business?

Serving the best Americano in town is up to you.

But winning back time and growing your business,

leave that to sum up.

Take orders and payments anywhere with the new SumUp terminal.

Turn occasional customers into regulars with a free loyalty program.

And with the SumUp point of sale system,

you'll always know when you're running low on your best-selling blends.

Visit sumup.co.uk to learn more.

This is CBSI on the world. I'm John Baxter. I'm Professor Nicholas Thomas is here. His new book is Voyagers. Many avenues that we've not had time to explore, but now the great big mystery that just

sits there and makes you laugh is like the Game of Thrones or trying to figure out the world by reading Greek history.

All right, here we go.

It's a map, not quite a map, constructed by two pie.

I say that incorrectly, Professor, forgive me.

What are we looking at?

Because you reproduce it in your book.

On Cook's first voyage, the ship spent several months off the island of Tahiti,

and the British developed close relationships with a host of islanders.

It wasn't one of these passing encounters where they exchanged a few things or interacted violently.

It was a sustained interaction.

And one of the most extraordinary aspects of this interaction was that Tupaya, who was a priest, a navigator, a political player

in the dynamics of the Tahitian kingdoms at that time, he was clearly extremely interested

...