It is a disgrace, that the amount of people that are able to touch type, is not increasing. Many user interfaces today optimize the input of data by providing a context-based list of choices, so that the user can easily pick what is needed. Mobile phones excel at this, but if you want to be really efficient with a computer, you need a higher bandwidth between you and the computer.
Without touch typing, a programmer often does about 20 words per minute. A touch typing programmer easily approaches 80 words per minute or more. However, the really big difference, is that the touch typer focuses on the task, and not on the keyboard. Touch typers are usually able to involve themselves in a discussion about something else, while touch typing.
Touch typing also decides the choice of tools. A good example is computer games. Everybody can sit down with a playstation and play some games. it takes much more to learn 25 different keys in a complicated PC game, but those people that like PC games, often dislike console games, because of the lack of bandwidth between the user and the PC.
However, touch typers also program differently and use applications differently. It's not just about speed, but also about how problems are solved. As you can see in the video, it takes less than 3 minutes to type this blog entry.
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