"No Substance" refers to a concept or situation where there is a lack of meaningful content or value. It can apply to discussions, arguments, or products that do not provide substantial information or benefits. This term is often used in critiques of media, advertising, or even personal interactions that seem superficial or insincere. In the context of philosophy, "No Substance" can also relate to discussions about the nature of reality and existence. Philosophers may debate whether certain ideas or entities have true essence or significance, leading to questions about what constitutes meaningful existence.