Originally Posted by theducks
Now that violates what I was taught in Print shop (Cold and Hot type) in High School.
A document should have no more than 6 fonts (I take that to mean, Font Families) or it becomes too busy.
For a small document, sure. But books can handle more than that because of their size. For example, your title page need not use the same font as other pages in the book. Your chapter heads often get significantly different styles. Drop caps. Small caps. Heading along the top. And you're right at six without doing anything even remotely fancy with the body text, sidebars, etc.