Summary
Highlights
The speaker introduces David Lewis as one of the biggest geniuses of the 20th century who profoundly changed modern philosophy. Despite his immense contributions, Lewis's name might not be as widely known as other prominent philosophers like Kant or Hume. The video aims to make Lewis's complex analytic philosophy more accessible to a general audience. The speaker expresses a strong belief that Lewis's work will be discussed for centuries to come.
David Lewis's greatness stems from his ability to develop a fully coherent philosophical system where an ontology forms the foundation, and everything logically flows from it to explain various phenomena. The video lists several of his influential theories, with his most revolutionary being modal realism.
Lewis's concept of modal realism, detailed in his book 'On the Plurality of Worlds,' is central to his philosophy. According to Lewis, every possible world exists as a real entity. He argues for an infinite number of possible worlds, suggesting that our world is just one among many. This includes worlds where even fantastical scenarios, like being a hobbit, are real. While seemingly 'mad' and an 'ontological explosion,' modal realism can solve numerous philosophical problems, and even has parallels with physicists' theories of parallel worlds.
The video promises to delve deeper into the concept of possible worlds and why it makes sense to include them in our ontology. Before that, an episode on natural properties, based on a recent article by David Lewis and a viewer request, will be released. The speaker encourages viewers to watch a previous episode about Lewis's views on the laws of nature for more information.