Alice Rawsthorn has an article in the New York Times titled "The Demise of ‘Form Follows Function’":

But our ability to work out how to download and play music on a Shuffle is largely determined by the design quality of the software that operates it — the “user interface” in geek-speak, or “U.I.” If the “U.I.” is well designed, you should be able to use the device so intuitively that you will not have to think about it. But if it is badly designed, the process will seem so confusing that you will probably blame yourself for doing something wrong.

That is why the first wave of U.I. designs sought to reassure us by using visual references to familiar objects to help us to operate digital ones. Take the typewriter keyboards on computers, and video game controllers modeled on TV remote control pads. As our confidence has grown, U.I. design has become more sophisticated, increasingly relating to our physical behavior, rather than objects.

Ms. Rawsthorn could be forgiven for being a design writer and not a tech writer, and therefore not knowing that nobody uses periods in the acronym "UI." But surely someone at the Times should have pointed that out.