In everyday conversation, a theory often means a guess. In science, it means something very different. The words hypothesis, theory, and law describe different parts of scientific understanding, and they are not simply levels on a ladder where a hypothesis eventually becomes a theory and then graduates into a law. A hypothesis proposes something that can be tested. A scientific theory provides a broad explanation supported by evidence.

Starting a business with no money does not mean starting without resources. You still need time, skills, relationships, knowledge, or access to potential customers. What you can often avoid is spending thousands before you know whether anyone wants what you are selling.

Procrastination is easy to mistake for laziness, but the psychology behind it is more complicated. People often procrastinate even when they genuinely want to complete a task and know that delaying it will create more stress later.