Designing for mathematical...

Designing for mathematical consistency ignores three related factors: that identical widths and shapes appear differently to the eye in different combinations within a letter or glyph; that identical shapes blend together and are harder to differentiate across words and lines; that letters in a typeface are placed alongside each other, and one must adjust to deal with common juxtapositions.
Yahoo’s Logo Reveals the Worst Aspects of the Engineering Mindset on Mayer’s suggestion that Yahoo “wanted there to be a mathematical consistency to the logo, really pulling it together into one coherent mark.”

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