I don’t know exactly what “optical balanced weights” means, but that ‘P’ does not look balanced to me. pic.twitter.com/zhU1QVU8OV

— Typographica (@typographica) December 28, 2015

… As weight is added, corrections are made: counters opened, contrast increased—even on Geometrics. This ‘P’ must be wider, ‘A’ bar lighter.

— Typographica (@typographica) December 28, 2015

… 3 typefaces that demonstrate these principles. Even Platform, with intentionally extreme proportions, is adjusted. pic.twitter.com/tuFWgnaHiO

— Typographica (@typographica) December 28, 2015