I recently watched this video:
One conclusion is that chairs do not exist, which comes about due to some jumping through arguments about metaphysics and language.
But here is my thought: the concept of chair is useful. We all know what it means and have an understanding of it. Because of that usefulness and common understanding, chairs exist.
We might not be able to come up with a solid definition of what a chair is. We might be completely unsure what is “real” and what are the qualifications for something to “exist.” Thinking about it too much might lead to some interesting paradoxes and questions.
Yet at the end of the day, the philosophizing ends and we go and and sit on our chairs and we know what a chair is.
So is the pursuit of questioning the existence of things actually useful for something? Or is it just for fun?