 The majority of the human race has standardized a base 10 counting system, that is to say we use combinations of 10 different symbols to represent numbers. That decision is totally arbitrary. Sure, we have 10 fingers, but honestly, 10 isn't a particularly useful number for counting. Take base 2 or binary. Binary is great for the accuracy of computers because there's no mistaking on 1 for a 0, unlike some decimal numbers. Counting systems that use higher powers of 2, like base 8 or base 16, are also really useful because they're easily divisible in half repeatedly. They're also easily converted from one to the other. 30 in hex is 60 in octal. Many people have advocated a base 12 or duodecimal counting system because nice round numbers like 1, 0 are easily divided into 2s, 3s, or 4s without getting nasty repeating numbers after the duodecimal point. After all, if it's an arbitrary choice, why not choose a base with some sort of useful feature? And just for people who are worried about not being able to count on your fingers and thumbs, try counting on your knuckles, or the knuckles and tips of your fingers. Is it possible that the efficiency of counting in a different base might be worth the cost of shifting humanity to that base? That's it. Check the description for relevant links, don't forget to blah blah subscribe, blah share, and don't stop dunking.