"And yes, counting from zero is slightly more efficient than starting at 1. Computers are built on a 0 and 1 numbering system that makes up everything (hello binary!). Counting from 0, is just easier and creates efficiency."

Um... yeah. Who wrote this exactly? An actual programmer? And what does binary have to do with it? I am a fan of 0-indexing, don't get me wrong, but certainly we don't do it for the sake of efficiency. If anyone knows better let me know, but as far as I am aware it has much more to do with a more natural expression of a set, as well as dealing with pointers whose first element lies 0 elements away.