That's part of the problem.

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Those links weren't really things. The physical universe, by definition, is made up of things that have weight and volume, that can be moved from place to place. As digitally experienced as we've become over the year, it seems to me that it's still difficult for many of us to grasp the idea that bits aren't like that.

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Go to: A vague concept waiting to materialize, or
Go to: But you can, you can!