Exercise 3 - solution

Article's claims: grounds that are too fine give a bitter, harsh, over-extracted taste and slow filtration.

So the grind is probably too fine. Make it coarser (a wider burr gap).

Expected result (inference): the bitterness and harshness ease and the filter drains faster. If it then tastes weak, you have gone too far the other way; the article says an overly coarse grind gives weak coffee unless you use more coffee.

Other causes of bitterness (water too hot, brew too long) are not covered in this chapter.