Drew McLellan 18 December 2008 I like the sound of equivalent experience, and would love to read any of what Mr. Cartwright has said on that. The best I can find is a recording of his @media 2008 presentation. It’s hard to follow without seeing what’s on the screen, but here it is If a company’s designers value a certain visual design / feel highly, and a large number of their customers are using IE 6, they’re less likely to appreciate developers coming to them with ideas of progressive enhancement. You’re confusing progressive enhancement with the ability to implement a given feature in a given browser. Of course you can have buttons with rounded corners in IE6, but it’s going to involve hacking around with images. You may decide that the advantages of not relying on images is worth the trade off of not having those rounded corners in older browsers. If so, progressive enhancement enables you to provide those more visually appealing buttons for modern browsers, whilst giving older browsers still perfectly serviceable squared corners. The squared and the rounded corners are equivalent. Everyone has the same content, functionality and care in their user experience. Just some people have corners one shape, and others another.