“Lefty Loosy, Righty Tighty”: 30 Highly Useful Facts That Are Not Yet Universal Knowledge

In the 21st century, the real issue isn’t “How do you find information?” but “How do you sift through the oceans of data out there?” As a result, it can be hard to actually know what is “common knowledge” and what is some obscure factoid you have randomly memorized. 

Someone asked “What’s something you thought was common knowledge but found out most people didn’t know” and netizens shared their best examples. From intricate traffic rules to observations about human behavior, hopefully, you will learn something new. So get comfortable as you scroll through, upvote your favorite examples, and comment your ideas below.