I was going to post this standalone, but will post it here. I was recently reading the Hacker News initial reaction to Facebook acquiring Instagram in 2012:
One of the commenters says it will be the equivalent to Google buying YouTube. To which another commenter replies "bookmark this comment, see you in 2022". And here we are:
If they were wrong, the comment would have continued rotting away unnoticed. But they got lucky and were right -- confirmation bias is a wonderful thing.