SASS and similar constructs like LESS all suffer the same major drawback: they require a preprocessor to produce actual CSS. That implies 2 challenges: 1. You limit yourself to using devices that can install and run such a preprocessor, which excludes smart phones and locked-down school computers; 2. You still need to know real CSS in order to debug layout problems, but now you also need to know whether they're caused by your lack of CSS understanding, or by the LESS or SASS...

Additionally, I find many an employer uses your ability to obtain certificates as a sign that you're able to follow through and complete tasks and projects. That way they know you aren't going to just let things linger, half done.

Currying helps lower arity. That, in turn, lowers testing complexity.

You might very well be the first person to ever have written a definition of monads that makes sense. Thank you!