``It still remains true that, with negative theorems such as this, transforming personal convictions into objective ones requires deterringly detailed work. To visualize the whole variety of cases, one would have to display a large number of equations by curves; each curve would have to be drawn by its points, and determining a single point alone requires lengthy computations.
You do not see from Fig. 4 in my first paper of 1799, how much work was required for a proper drawing of that curve.''
K. F. Gauss (Letter to Schumacher 1836)