Philosophy
The Metaphysics of Objects and the Problem of Composition
Quick fact
The problem of composition asks what it takes for several things to form a single object. Surprisingly, there is no universally accepted answer, and some philosophers argue that no ordinary objects exist at all.
Why this is interesting
You are looking at a table, but is that table really an object? Or is it just many tiny particles arranged in a certain way? When do several things truly become one thing?