None (theory)

In philosophy and logic, "None" refers to the concept of absence or non-existence of any objects, qualities, or entities within a particular context. It signifies a complete lack or zero quantity, indicating that nothing is present or applicable. For example, saying "None of the apples are ripe" means there are no ripe apples among the ones considered. Understanding "None" helps clarify scenarios where the absence of something is just as meaningful as its presence, especially in reasoning, problem-solving, or defining boundaries in discussions.