"Clicking on this headline I knew for sure that the person was a woman" And this proves what exactly? Putting aside that you didn't "know" anything, all it sho

"Clicking on this headline I knew for sure that the person was a woman" And this proves what exactly? Putting aside that you didn't "know" anything, all it shows is that you made a correct guess. On what basis? Well, probably because the media have been yammering on about gender bias for years. So you're confusing your own prior bias with reality. Congrats. You've discovered confirmation bias.