While the above may seem a bit hefty and overwhelming, there is no need for you to finish writing everything in one sitting; neither is it logical to expect that.

The invention of electronic computers has made it possible to free man from the labour of complex computations.

This is particularly useful in long and complex stylesheets. You can read more about this at Stop Design.

Well, those are multiple goals, and you cannot focus on the exercise habit if you’re trying to do all the others at the same time.

We have this built-in admiration for complexity. And the obvious, which is really your most powerful approach, tends to be not trusted.