We have been secretly, for the last 18 months, been designing a completely new user interface. And that user interface builds on Apple’s legacy and carries it into the next century. And we call that new user interface Aqua, because it’s liquid. One of the design goals was that when you saw it you wanted to lick it. But it’s important to remember that this part came several minutes after outlining Mac OS X’s underlying architecture. Jobs began talking about Mac OS X by stating its goals, then the architecture used to attain those goals, and then there was a mention of how the new OS looked.

Sure, a lot has changed in the technology landscape over the past twenty years, but the Mac OS X introduction in 2000 is almost disarming in how clearly and precisely focused it is. It is framed in such a way that you understand Jobs is talking about a new powerful tool. Sure, it also looks cool, but it feels as if it’s simply a consequence of a grander scheme. A tool can be powerful in itself, but making it attractive and user-friendly is a crucial extension of its power.

But over the years (and to be fair, this started to happen when Jobs was still CEO), I’ve noticed that, iteration after iteration, the focus of each introduction of a new version of Mac OS X shifted towards more superficial features and the general look of the system. As if users were more interested in stopping and admiring just how gorgeous Mac OS looks, rather than having a versatile, robust and reliable foundation with which to operate their computers and be productive.

What some geeks may be shocked to know is that most regular people don’t really care about these changes in the way an application or operating system looks. What matters to them is continuity and reliability. Again, this isn’t being change-averse. Regular users typically welcome change if it brings something interesting to the table and, most of all, if it improves functionality in meaningful ways. Like saving mouse clicks or making a multi-step workflow more intuitive and streamlined.

But making previous features or UI elements less discoverable because you want them to appear only when needed (and who decides when I need something out of the way? Maybe I like to see it all the time) — that’s not progress. It’s change for change’s sake. It’s rearranging the shelves in your supermarket in a way that seems cool and marketable to you but leaves your customers baffled and bewildered.

This yearly cycle forces Apple engineers — and worse, Apple designers — to come up with ‘new stuff’, and this diverts focus from fixing underlying bugs and UI friction that inevitably accumulate over time.

Microsoft may leave entire layers of legacy code in Windows, turning Windows into a mastodontic operating system with a clean surface and decades of baggage underneath. Apple has been cleaning and rearranging the surface for a while now, and has been getting rid of so much baggage that they went to the other extreme. They’ve thrown the baby out with the bathwater, and Mac OS’s user interface has become more brittle after all the changes and inconsistent applications of those Human Interface Guidelines that have informed good UI design in Apple software for so long.

Meanwhile the system hasn’t really gone anywhere. On mobile, iOS started out excitingly, and admittedly still seems to be moving in an evolving trajectory, but on the iPad’s front there has been a lot of wheel reinventing to make the device behave more like a traditional computer, instead of embarking both the device and its operating system in a journey of revolution and redefinition of the tablet experience in order to truly start a ‘Post-PC era’.

An operating system is something that shouldn’t be treated as an ‘app’, or as something people should stop and admire for its æsthetic elegance, or a product whose updates should be marketed as if it’s the next iPhone iteration. An operating system is something that needs a separate, tailored development cycle. Something that needs time so that you can devise an evolution plan about it; so that you can keep working on its robustness by correcting bugs that have been unaddressed for years, and present features that really improve workflows and productivity while building organically on what came before. This way, user-facing UI changes will look reasonable, predictable, intuitive, easily assimilable, and not just arbitrary, cosmetic, and of questionable usefulness.

As for a Hall of Shame thing? That would be the slow but steady encroachment of single-window applications in MacOS, especially via Catalyst and Electron. The reason I gravitated toward MacOS in the first place is the same reason I continue to use it: it fits my mental model of how an operating system ought to work.

In recent years Sketch’s Mac-ness has become a liability. Requiring every person in a large design organization to use a Mac is not an easy sell. Plus, a new generation of “internet native” users expect different things from their software than old-school Mac connoisseurs: Multiplayer editing, inline commenting, and cloud sync are now table-stakes for any successful creative app.

At the time of Sketch’s launch most UX designers were using Photoshop or Illustrator. Both were expensive and overwrought, and neither were actually created for UX design. Sketch’s innovation wasn’t any particular feature — if anything it was the lack of features. It did a few things really well, and those were exactly the things UX designers wanted. In that way it really embodied the Mac ethos: simple, single-purpose, and fun to use.

Apple pushed hard to attract artists, filmmakers, musicians, and other creative professionals. It started a virtuous cycle. More creatives using Macs meant more potential customers for creative Mac software, which meant more developers started building that software, which in turn attracted even more customers to the platform.And so the Mac ended up with an abundance of improbably-good creative tools. Usually these apps weren’t as feature-rich or powerful as their PC counterparts, but were faster and easier and cheaper and just overall more conducive to the creative process.

Apple is still very interested in selling Macs — precision-milled aluminum computers with custom-designed chips and “XDR” screens. But they no longer care much about The Mac: The operating system, the software platform, its design sensibilities, its unique features, its vibes.

The term-of-art for this style is “skeuomorphism”: modern designs inspired by their antecedents — calculator apps that look like calculators, password-entry fields that look like bank vaults, reminders that look like sticky notes, etc.This skeuomorphic playfulness made downloading a new Mac app delightful. The discomfort of opening a new unfamiliar piece of software was totally offset by the joy of seeing a glossy pixel-perfect rendition of a bookshelf or a bodega or a poker table, complete with surprising little animations.

There are literally dozens of ways to develop cross-platform apps, including Apple’s own Catalyst — but so far, none of these tools can create anything quite as polished as native implementations.So it comes down to user preference: Would you rather have the absolute best app experience, or do you want the ability to use an acceptably-functional app from any of your devices? It seems that users have shifted to prefer the latter.

Unfortunately the appeal of native Mac software was, at its core, driven by brand strategy. Mac users were sold on the idea that they were buying not just a device but an ecosystem, an experience. Apple extended this branding for third-party developers with its yearly Apple Design Awards.

for the first time since the introduction of the original Mac, they’re just computers. Yes, they were technically always “just computers”, but they used to feel like something bigger. Now Macs have become just another way, perhaps the best way, to use Slack or VSCode or Figma or Chrome or Excel.

visionOS’s story diverges from that of the Mac. Apple is no longer a scrappy upstart. Rather, they’re the largest company in the world by market cap. It’s not so much that Apple doesn’t care about indie developers anymore, it’s just that indie developers often end up as the ants crushed beneath Apple’s giant corporate feet.

I think we’ll see a lot of cool indie software for visionOS, but also I think most of it will be small utilities or toys. It takes a lot of effort to build and support apps that people rely on for their productivity or creativity. If even the wildly-popular Mac platform can’t support those kinds of projects anymore, what chance does a luxury headset have?