Dr. Lucas gave a presentation on brands where he discussed what brands are, their meaning, and how they are used to appeal to buyers. He explained that brands, like money, are a form of currency that can be exchanged to gain attention and promote sales. Dr. Lucas used examples from phone and vacuum commercials to demonstrate how brands showcase exchange value and how advertising portrays upgrading to the newest products. The presentation analyzed how brands function as a form of exchange value in modern advertisements.