> You have no idea of the complexity of positioning, CSS, rendering... I have some idea. Besides, a rendering engine doesn't need to reinvent all of the wheels

> You have no idea of the complexity of positioning, CSS, rendering... I have some idea. Besides, a rendering engine doesn't need to reinvent all of the wheels down to the metal. CSS is optional. > The best way to innovate in the browser market is indeed to use an existing rendering engine. Well, it's subjective. If you care about "markets", then indeed a custom rendering engine would be wasted effort. If you care about rendering engines, then "markets" are a waste of effort ;)