The article discusses the discovery of a shape called the Noperthedron, which is the first known convex polyhedron that cannot pass through itself, a problem that has puzzled mathematicians for centuries. This shape, proven by Jakob Steininger and Sergey Yurkevich, defies the previously held conjecture that all convex polyhedra have the "Rupert property," which allows one shape to pass through another of the same kind. The solution involved advanced theoretical work and extensive computational calculations.