Uh, I don&#x27;t know: IM chatting is anything but &quot;instant&quot;. It&#x27;s pretty slow, actually. I don&#x27;t really feel it while in conversation, but if I look at times each message was posted afterwards — it&#x27;s easy to notice that conversation of the same volume would be done much quicker verbally. Waiting for everyone to respond on the top of it would be so slow it would kill the conversation.<p>I don&#x27;t speak sign language, but I observed others doing that and it seems to be almost as fluent as talking verbally. While both parts are involved in conversation most of the time — it&#x27;s something we do as we speak verbally as well: making facial expressions, nodding, saying &quot;uh-huh&quot; and inserting little jokes.<p>I never actually noticed that deaf people really <i>tell stories</i> at the same time: one of them usually seems like listening. So, I&#x27;d actually want some reference that would prove that deaf people really do &quot;speak simultaneously&quot;.