> Rather than having flow and concentration interrupted by incoming message notifications, with email I can easily decide when to fetch and process messages.
Asynchronous communication describes the client-server-client model, and both chat and email fall into this category, especially since there are peer-to-peer chat programs. What the author states sounds to me like a problem with the notification model and fetching beyond the user's control. Chat is not inherently in "flow."
> Rather than having flow and concentration interrupted by incoming message notifications, with email I can easily decide when to fetch and process messages.
Asynchronous communication describes the client-server-client model, and both chat and email fall into this category, especially since there are peer-to-peer chat programs. What the author states sounds to me like a problem with the notification model and fetching beyond the user's control. Chat is not inherently in "flow."