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Although the CSCW paper you reference (Schmidt & Bannon, 2013) does not seem to mention the historical relation between HCI and CSCW explicitely, it does reference an early CHI paper on the significance of CSCW by Bannon (1992): Perspectives on CSCW: From HCI and CMC to CSCW. In chapter two of this paper ("Issues in HCI") problems within HCI are ...


Apparently they first appeared on reel to reel tape machines in the 1960s. The Play Arrow would indicate the direction of travel of the tape. Fast-forward and backward would be indicated by doubled arrows. See this post on imgur.

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