From Petra’s conversation with the Sealand woman, David learns more about this race of Sealanders. What is David’s impression of them? Why?

David felt they sounded advanced but a little conceited and condescending.

We let her prattle on. It was difficult to make sense of a lot of the things she said, and possibly she had not got
them right, anyway, but the one thing that did stand out clearly was that these Sealanders, whoever and wherever they
were, thought no small beans of themselves. It began to seem more than likely that Rosalind had been right when she
had taken 'primitive' to refer to ordinary Labrador people.