This 5-minute video explains the meaning of credit card numbers. They aren't just random, and the final digit is a check digit that makes it possible to determine if a credit card number is invalid without checking it against a database of issued credit cards. (It's called the Luhn Algorithm and you can try it out here.)
How to decode credit card numbers
Facebook actually made more money when they tried getting rid of the News Feed algorithm.
There's a lot of Facebook news out there right now, but I found this particularly fascinating. As revealed in the recent disclosures made by Facebook Whistleblower Frances Haugen to the Securities and Exchange Commission, the company did, in fact, experiment with getting rid of their recommendation algorithms — as recently as 2018. Here's Alex Kantrowitz… READ THE REST
The weird new conspiracy theory that the Internet has been dead for 5 years
Thanks to a recent installation of The Atlantic's ongoing series about conspiracy thinking in America, I just learned that the Internet is dead. And that everyone on the Internet — including, presumably, myself — is in fact a highly advanced artificial intelligence, and that all of us AIs think we are successful duping all of… READ THE REST
Why do certain people always show up at the top of your Instagram feed? Here's the official word from Instagram
Instagram (owned by Facebook) wrote a post to its blog explaining how its suite of algorithms works to decide what photos and videos to show you, and how you can take more control over what you see. Most of it is pretty obvious (if you like and comment on a person's posts, you see their… READ THE REST
Save over $50 off this smart Belgian waffle maker
Belgian waffles are a blank template for unforgettable weekend breakfasts. From savory creations with avocado, bacon, and goat cheese to the traditional sweet kinds with berries, powdered sugar, and syrup, waffles are unstoppable. However, nothing brings down a waffle-inspired dream morning like the antiquated, dirty waffle iron that cooks unevenly or worse, unexpectedly burns and dries… READ THE REST
Score this headlamp for 21% off and never be without a burst of brightness
Summer is here, which means we're spending less time under blankets and more time under stars. And, while we're no longer chasing the sun quite as fast, sometimes random household chores do need an extra flash of light here and there. This One80 LED Headlamp will help you get the darker things done so you can get back… READ THE REST
Generate secure passwords and keep your current ones secure for $25
From your music streaming subscriptions and bank accounts to your work laptop, passwords unlock the most vital things in our lives. Unfortunately, that's a mess to track unless you're exceptionally organized or have some intricate communication system for your passwords and logins. If you aren't, you might deal with many forgotten unique passwords, annoying security questions, and botched password… READ THE REST
