Frere-Jones: Typeface Mechanics 001 / by john cheng

Great posting by Tobias Frere-Jones on the subtle nuances of type design dealing with the tension between logic and optics. Better do a read up on this if you are going to do some type design soon.

Our conscious minds want to draw one shape, but our eyes need to see another. Part of typeface design is managing this eternal friction between logic and optics. It’s always there, no matter the style.
Source: http://www.frerejones.com