The test itself was misleading, and has now been updated to better reflect reality.
In your analogy, it would be as if pupils were given tests with some irrelevant questions, and the tests later revised to focus just on proper subject material.
In your analogy, it would be as if pupils were given tests with some irrelevant questions, and the tests later revised to focus just on proper subject material.
That seems like valid reasoning to me. I've also seen Hixie make comments that seem to indicate him wanting to avoid these issues for any potential Acid4:
When we do Acid4 (probably around the time we have at least three major browsers shipping Acid3-passing browsers), I think we'll have to focus on testing fewer, more critical things. Acid3 tests a lot of critical stuff, but also checks a lot of less important stuff at the same time, and it's in those areas that we've had the most problems with specs changing under us.