The Sorites Paradox
One grain of sand is not a heap. Adding a single grain never turns a non-heap into a heap. So heaps do not exist.
c. 350 BCE20 min read
American analytic philosophy
Peter Unger
Philosopher at New York University. In a run of papers around 1979 he pressed the sorites in the direction almost everyone else refuses to go, concluding that ordinary terms such as "stone" and "table" are incoherent and that there are no ordinary things — and, in a companion paper, no people either.