That's... not what statistical significance means. All statistical significance means is that there's a less than five percent chance of getting that result at

That's... not what statistical significance means. All statistical significance means is that there's a less than five percent chance of getting that result at random, if the null hypothesis were true. Now, granted, most studies reported on find p-values well below the .05 threshold. But still, if you go out and count the number of studies published in a year, one percent of them is still a LOT of wrong studies. And remember that, due to publication bias, it's a biased sample of the population of studies. So for every 100 studies that are examining a hypothesis that is in reality false, you'll get 4-5 that get a statistically significant finding instead. And it's those few studies that end up getting published.