A more thorough explanation:

Logical positivism is a philosophical system or movement that requires statements to be verifiable in principle to be considered meaningful. This means that a statement must be able to be tested or proven true or false through observation or experimentation.

For example, the statement "the sky is blue" is verifiable because it can be observed and tested through sight. However, the statement "God exists" is not verifiable because it cannot be tested or proven through observation or experimentation.

Logical positivism is different from legal positivism, which is a legal theory that states that the validity of a law is determined by its source rather than its content.