Atkinson writes QuickDraw, then writes an app, MacPaint, that essentially uses every aspect of it, then has Susan Kare using MacPaint. What a fantastic feedback

Atkinson writes QuickDraw, then writes an app, MacPaint, that essentially uses every aspect of it, then has Susan Kare using MacPaint. What a fantastic feedback loop for readying a framework before shipping. Contrast this with the "I Don't Know How To Count That Low" meme.