I was a 0-step thinker assuming that the majority of people doing this would pick random numbers bringing the average to 50. I expected that on a popular websit

I was a 0-step thinker assuming that the majority of people doing this would pick random numbers bringing the average to 50. I expected that on a popular website that will likely get shared on Facebook, random would be the most likely outcome. I think I either underestimated how many people would share this on Facebook, or perhaps, the audience that will go to a New York Times page is different than the audience that will go to "Only geniuses will be able to get this..." type quizzes. Of course, it could be that HN skewed the results in favor of a true mathematical + predictive model.