2 ms·
Here, 'impossible' is defined very loosely, as 'not what it appears to be'. But what does it appear as? Try imagining it, per Necker Cubes, as a concave shape.
by mannykannot 5y ago
Here, 'impossible' is defined very loosely, as 'not what it appears to be'. But what does it appear as? Try imagining it, per Necker Cubes, as a concave shape.