We all know that calculus courses such as 18.01 and 18.02 are univariate and vector calculus ... and why evaluating the chain rule outputs-to-inputs is so practically important. Last few slides of ...

for those've you who haven't seen the video they're reacting to, think: 2 girls, 1 cup… except it's a guy… and a (glass) jar… that goes up his ass… and shatters… and DESTROYS his anus… ENJOY!