Checklists of features tell you nothing about how well they are implemented. OS X features are implemented with attention to all of the details that make them

Checklists of features tell you nothing about how well they are implemented. OS X features are implemented with attention to all of the details that make them a joy to use. I rarely get frustrated anymore because my computer isn't doing want I want it to. Check that. I still get seriously frustrated whenever I make a new feature for our site, verify that it works in every browser other than IE, and then test it in IE to see that I need to perform some javascript, css & dom acrobatics to get it working.