  We offer an algorithmic approach for determining Harnack quantities for the
curve shortening flow and we show how, following this procedure, one can obtain
Hamilton's Harnack inequality for this flow $\kappa_t + \frac{1}{2t}\kappa \geq
\frac{\kappa_s^2}{\kappa}$, where $\kappa$ is the curvature of the curve being
deformed by the flow.
