The brake disc can get warped, i.e. bend. If that happens, it may rub against the brake pads, even during free rotation, unnecessarily losing energy (speed). Warping may occur in various ways (disc hits the ground, brake applied while kart was airborn, etc.).
In sailing warping is a slow method of progressing in still waters or against the wind. It is carried out by throwing or shooting a warp anchor in the intended direction of progress and as it settles, reeling it in; thus pulling the boat in that direction.
A method which can overcome some of the problems of edge matching. It can also be used to resolve registration problems arising from digitizing source maps of different scales, different projections, and varying coordinate systems.