logic · paradox
Sorites paradox
Remove one grain. When did it stop being a heap?
One grain is not a heap. When does removing one grain destroy the heap? Every grain is the same kind of thing, so every grain is the same color. Take them away one at a time.
One grain of sand is not a heap.
Adding one grain never seems enough to turn it into a heap.
Removing one grain never seems enough to destroy it.
Yet at some point the heap is gone.
Small steps can cross a line we cannot sharply draw.