From the archive
The largest sofa shape that can be slid around a right-angled corner in a hallway one unit wide was an open math question for decades.
Source: Solving the Moving Sofa Problem, UC Davis
Today’s design
Chandelier 2097
Sarfatti's take on the chandelier — bare bulbs on slender radiating arms, all elegant restraint.
See the real Chandelier 2097 →A new fact every morning.Sunday, 4 October 2026