text: If the tech were to be efficient in speed and usage in a classroom or any other setting, then it should be a necessity in school. However, with programs such as Google, the computer just would not be necessary. In the text it says: "Imagine a computer that knows when youre happy or sad. For example, if you smile when a Web ad appears on your screen, a similar ad might follow. But if you frown, the next ad will be different." (6) Google does that by taking information you search publicly in your own Google accounts.