The concept of non-duality posits that everything is in constant synthesis with one another, and the belief in the independent existence of things is merely an illusion. This notion is remarkably similar to other philosophical beliefs found in various regions, along with being similar to Marxism. The word 'Non-duality' itself means 'Not two.' Said philosophy originates from the East.
Person 1: "I read a report on Non-duality this summer, it was confusing.."
Person 2: "I get what you mean, man, but it's an interesting topic, isn't it?"