Pendragon, a leading mathematician, devised a mathematical formula that could be used to draw nonrepeating patterns.

These improvements consist, firstly, in a novel construction of apparatus to be attached to or applied upon railways, at those parts termed switches, shunts, or moveable rails, which are commonly used for transferring engines, carriages, or trains, from one line of rails to another, as occasion may require, and which apparatus I call a switch or shunt protector.

prone to failure

Some news executives attribute this youthful apathy to information overload and the explosion of media options.