Just as our visual system strains to see the vase and the two faces at once, we struggle to conceive of a motion that has a dual motivation: to put and to fetch. A paper by Van de Cruys, Wagemans and ...

In a video that blends childhood nostalgia with clever humor, TikTok creator Leanna Isabel (@leanna..isabel) performs a classic paper magic trick, tearing, crumpling, and restoring a sheet of paper ...