But, statistically speaking, it probably is an imbecile. These systems aren't optimizing for someone like you trying to be clever. They're trying to handle th

But, statistically speaking, it probably is an imbecile. These systems aren't optimizing for someone like you trying to be clever. They're trying to handle the more common cases of someone typing a street address in the wrong field or forgetting the ".com" or putting in an HTTP address or some such. They're trying to catch that, not every possible pedantically legal string you could throw at it. Maybe they could improve the validator, or maybe they'd rather be spending programmers' time on things with actual business value. The sum total of imbeciles may well represent a bigger market than the sum total of people like you.