The Urban Dictionary defines “square” as “a person who is regarded as dull, rigidly conventional, and out of touch with current trends.” Wikipedia says a square is a regular quadrilateral. To anyone trying to install a door or windows it’s called a unicorn.
For the purpose of DIY, “square” refers to the collection of right angles that make a rectangle or square shaped hole. One assumes that when installing a door or window, certainly the hole is “square.” The pieces going down are straight. The pieces going across are level. That is what one would assume, and you know what happens when we assume.
My father always said “there is no such thing as square.” Boy was he right. (No pun intended) Recently, when installing a door, as most all people who do this, I had to use shims to make it work. Shims are little slices of wood that are inserted between things to make them square. Obviously, if they sell these things in a store, they know either the frame or the door won’t be square.
Here is what I want to know. If my dad knew that nothing was square, why did he not think to sell shims for a living?
P.S. Here's a link to some great door installation instructions: