Correct. That's why it's such a massive task. Servo is pretty decent at supporting a lot of web standards now. Unfortunately, the real web is made of quirks and

Correct. That's why it's such a massive task. Servo is pretty decent at supporting a lot of web standards now. Unfortunately, the real web is made of quirks and implementation targeting workarounds. I think the biggest lesson from Servo is that entry barrier to the web market is already much higher than we would like it to be. Having a great new web engine supporting 100% of web standards does not get you even close to being ready to serve the web. And the willingness of web developer community to take the "one browser only feature" bait is a major part of the problem.