According to communication scientists, the ability to be interrupted is a key feature of interactivity. When you are talking with a bunch of friends, everyone interrupts everyone else; these natural interruptions do not impede whatsoever the conversation at hand. When you are making an instructional presentation, however, most participants will not interrupt you—even if you invite them to do so. This reluctance is due to a combination of politeness, fear of attacks by the presenter, and anxiety about ridicule from the ...
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