Takeout Boxes
We all adore Chinese takeout on days we are too tired to cook. You probably eat it right out of the carton as well. However, the truth is that the takeout boxes were designed flat because they are supposed to be a plate on their own. When the food is still inside, you can pull the sides apart and then lay it flat on the table. If you do this correctly, you will have a perfectly usable plate! Voila.
Double Keyboard Bumps
You might have noticed the bumps on the J and F keys on the computer keyboard. Apparently, the bumps were installed on the keys so that users can figure out the keyboard even when they have their eyes on the computer screen. When you type properly, your right pointer finger should rest on J, while the left one is on F. You do not need to look at the keyboard since the bumps are enough indication.