I don’t think that IT should *just* be considered to be about the “inner workings” of technological devices or systems. In the design of hardware or software digital interfaces, human factors such as usability, accessibility, and interpersonal communications are often fundamental. Some aspects of IT may have limited human interfaces (e.g. a RAM chip), but they lie in the area of the IT domain outside of ICT. Conversely, ICTs all relate to IT in some way, and as such, I posit that they exist as a subdomain of IT, rather than as an intersecting or separate one.