Information is Physical, But Slippery
I am aiming to give the perspective of an outsider. I’m not really into quantum computing - in some ways, I’m a critic, although I am a friendly critic. To begin with the conclusion, I would like to point out that, in this field, people are always making comparisons with computing history, stating that quantum computing has reached this point, or that point. Currently, I believe, quantum computing is where Charles Babbage was: he had a relatively prophetic, far fetched and complete vision of what you could do in a mechanical way for handling data. He did not, however, have the remotest chance of actually doing it in his time. The real breakthrough came in 1890 or thereabouts when Herman Hollerith put together the right technology with the right application - tabulating US census data with electrical sensing of holes in punched card. That’s the combination that started us on the whole road towards automated data processing.
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