A good test is one that successfully identifies a range of relevant competencies when: - The takers are not placed under time pressure - The takers have access to any resources they'd like to use that are generally available to them in life
Sure, and this is true of most skilled jobs. But passing such a test doesn't guarantee you won't have to look up answers — there are plenty of cram-and-forget resources for engineering interviews, as for the SAT — and there's a lot more required to be a competent engineer.