“If you break a stick at 2 random points, the #probability that the 3 smaller sticks you now have can form a triangle is 1/4 (a,b and c are perpendiculars to the 3 sides) — The beautiful 'Broken Stick' problem, a 19th century problem from @Cambridge_Uni, first HT Martin Gardner. https://t.co/p253FvQil6”