Paste any piece of text into a word frequency counter and something immediately becomes visible that was invisible before. The words you thought you used occasionally appear dozens of times.

A store says 30% off. You want to know the final price. Your salary increased by 8%. You want to know how much extra that is per month. Your test score was 43 out of 56.

The food was great. The conversation was good. Then the bill arrives and someone has to figure out the tip, split the total, and calculate what each person owes.

Ask someone to pick a random number between 1 and 100. Most people say 37. Ask a different group and you will get 37 again. Human beings are terrible at being random.

The most common passwords in the world are still “123456,” “password,” and “qwerty.” Tens of millions of people use these. Security researchers find them at the top of every leaked credential database, year after year, without fail.

Your project deadline is March 15th. Today is February 3rd. How many working days do you actually have? Not calendar days — working days, excluding weekends.

The Problem With Living in a World That Uses Two Measurement Systems The United States uses miles, pounds, and Fahrenheit.

Every Question You Have About UUIDs — Answered UUID generators are one of those tools that developers use constantly but

Regular Expressions Are Not as Scary as They Look The first time I saw a regular expression, it looked like