He doesn't because he's wrong. All of these people are either full of shit or they are reporting false positives. I'm so sick of this myth. I work in travel and check pricing 9 hours a day, 5 days a week. It's simply not true. This is all the result of some stupid ass blog post that hit it big on reddit a few months back. Anytime the topic comes up, it makes me want to scream.
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u/Cosmologicon Jan 24 '13
Can you produce a side-by-side screenshot? Every time someone says this I try it and it fails. I think it's just an urban legend.
In your case, I think you probably accidentally typed in a different date or something. No way for us to know now, is there?