drhowarddrfine - 4:44 pm on May 24, 2013 (gmt 0)
Fortunately that's an old rule good designers no longer follow.
An old rule of thumb is ...
We aren't talking about font design. We're talking about font usage. On my planet, every designer we use understands and uses fonts and layout far better than I could ever hope to.
The designer who actually knows anything about font design and proper layout is few and far between... almost non-existent.