Everyone hates slow computers. Have you called a Help Center only to have them complain and say, $$Please wait. My computer is running slow.$$ The speed of the application is extremely critical, especially as we scale up to corporate$-$sized data numbers. An application can run very fast with $10$ records. However, how fast is the application when it is processing $500,000$ records? Big O gives us a way to analyze the speed of algorithms as they scale up$.$ In Big$-$O notation, what algorithm speed is so bad and so slow that it is considered worse than horrible?