If you happen to like our videos and have a few bucks to spare to support our efforts, check out our Patreo→→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 Never run out of things to say at the water cooler with TodayIFoundOut! Brand new videos 7 days a week! More from TodayIFoundOut Why Is It Illegal to Remove Your Mattress and Pillow Tags? https://youtu.be/ydW2J-8fdhQ?list=PLR0XuDegDqP0GESJ0DgpgTcThLJVEbFs8 Why is Aluminum Foil Shiny on One Side But Not the Other? https://youtu.be/6plHOj7kvLA?list=PLR0XuDegDqP0GESJ0DgpgTcThLJVEbFs8 In this video: One of the six simple machines, a screw is nothing more than an inclined plane wrapped around a center pole. While today screws come in standard sizes, and typically are tightened by turning clockwise (and loosened by turning counterclockwise), this is a recent invention. A great example of how things that seem simple can be really hard to do right, the development of the predicable system we enjoy today took 2,000 years to invent. Want the text version?: http://www.todayifoundout.com/index.php/2014/09/decided-screws-turn-clockwise/ Sources: http://www.learninginfo.org/simonides-history-mnemonics.htm http://en.wikipedia.org/wiki/British_Standard_Whitworth http://en.wikipedia.org/wiki/Clockwise http://www.boltscience.com/pages/screw2.htm http://www.boulonsplus.net/informations-techniques/history-of-screw-threads/ http://idiomation.wordpress.com/2014/03/12/lefty-loosey-righty-tighty/ http://www.etymonline.com/index.php?allowed_in_frame=0&search=screw&searchmode=none http://www.mikids.com/Smachines.htm http://www.threadcheck.com/technical-documents/thread-systems.pdf http://en.wikipedia.org/wiki/Unified_Thread_Standard http://www.whitworthsociety.org/history.php?page=2 http://www.scientificamerican.com/article/why-are-more-people-right/ Image Credit: https://www.bigstockphoto.com/ru/image-172739117/stock-photo-screwing-the-cre