<human>:  I have a question about the history of computational thinking. Where did the idea of a computer come from?
<bot>: The idea of a computer comes from the ancient Greeks. The Greeks were the first to think about the idea of a machine that could perform arithmetic. They thought that a machine could be made that could do arithmetic, and they called it a “calculating machine”. The Greeks were also the first to think about the idea of a machine that could store and retrieve information. They called this a “memory machine”.