Already it is getting personal. Maths brother feels a bit bad because a student at his University that he blew off a few weeks before commits suicide. Being emotionally unstable, and given that Judd Hirsch seems a bit low on fatherly pats this week, he concocts a ridiculous maths based reasons why this is murder* (angle of plummet slightly out). Turns out this week its all about a dodgy building, and maths brother makes up some equations to show that a tall building will fall over. So the excitement of applied maths leads to a showdown with the FBI Architecture Squad and Non-Union Welding Taskforce. The main use of maths is about application of forces: yet again Numb3rs should be called Phys1cs.
*It wasn’t murder by the way: HA! THE NUMBTHREERS LIED.