How do you express what it feels like, unless you know? How do you express the experience (sights, sounds smells), unless you have seen it or been apart of it?
I beleive these tidbits of information apply to the knowledge question. One can know what it is like to have someone online do what you tell them, thus making online knowledge just as viable as real time.
Additionaly, as has been stated, wannabe can be as simple as the context in how it is used.
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