Apple's virtual Siri-ball is a glowing reminder to Google and Microsoft that user interfaces really matter in software

Now that AI is being shoehorned into every app or operating system these days, whether you want it or not, attention is being increasingly turned to the user interface. At one end of the spectrum, you have Google and Microsoft's unaccommodating efforts, and at the other, you have Apple's new orb-of-wonder, actively lighting its 'surroundings'.

Later this year, an updated, fully AI-powered version of Siri will make its way to all of Apple's operating systems, though developers can already access it. For the likes of iOS and MacOS, Siri AI's interface isn't especially noteworthy, but on visionOS, the software that powers the Apple Vision Pro, it really stands out.

As briefly demonstra...