The irony is that although Navier had no conception of shear stress and did not set out to obtain equations that would describe motion involving friction, he nevertheless arrived at the proper form for such equations.
Ang bakal ay na bagama't Navier had walang balak ang stress ng mga gupitin at hindi naka-set out upang makakuha ng equation na naglalarawan sa kilos na kinasasangkutan sigalot, gayon pa man siya dumating sa tamang form para sa mga tulad equation.