Soft Question: Self-made graphs vs. Desmos I once heard that in real analysis you should expect to draw lots of pictures. Boy were they right. My question is, is it better to draw those pictures yourself or to rely on Desmos? On the one hand, drawing it yourself (or even better, mentally picturing it yourself) is good exercise, but on the other hand mighn't it be a bit pointless? Akin to instisting on doing arithmetic instead of using a calculator? What does MathStackExchange think?  

By all means, use all aids you have at hand to develop intuition and test hypotheses.
Just don't use a picture as a proof, specially in a real analysis course.
