Dialectical materialism is the way some people try to understand the world around them. It was developed by Karl Marx and Friedrich Engels as part of their theory of communism. Dialectical materialism tries to explain how societies and ideas change over time. It suggests that it's not only ideas or beliefs that drive changes in societies, but that material factors like economics, technology, and nature also play a role. In other words, dialectical materialism suggests that the way the world is shaped and changes is not just because of people's thoughts and beliefs, but because of how things work in the real world.