What has always surprised me when I walk into a bookstore is the number of books that you can find that are written with certainty. The authors tell some story as though it's true, but they don't have any evidence that it is true!
“I've been vegan for 15 years, and it turns out it makes a very big impact on the environment to eat fewer animal products, which cause more greenhouse gases than all of transportation combined.”
“I'm always wondering: Have all these time-saving devices actually saved us any time, or have they just created a million fetishes and obsessions that keep us from the quiet half hour we should be taking to sit and do nothing every day?”