CLEAN : Boris Johnson holds final campaign rally before Britain heads to the polls

The video begins with acknowledgments to James, followed by a discussion on NHS priorities and challenges. It then provides an overview of the points-based immigration system designed to attract top talent. The video concludes with a brief mention of the global economic context.

What does the speaker mean by 'brightest and the best' in the context of immigration?

How does the speaker describe the economy in relation to the world?