We’ve heard it straight from Apple: macOS and iOS aren’t merging together. Instead, Apple is going to bring the iOS app platform to the Mac in 2019. The result will likely be a macOS platform that’s still the Mac, but with a much heavier influence from iOS.

Last week I suggested that this makes me question the long-term viability of the Mac, but it’s also possible that Apple’s moves will lead to a world where I stop dreaming about a laptop that runs iOS because it just won’t be necessary. It all depends on how much all that iOS-originated software will change the Mac in the next few years.

Touch of iOS

Apple has steadfastly insisted that touchscreens don’t have a place on the Mac. Some of that comes from ergonomic arguments—as Craig Federighi told Wired, “We really feel that the ergonomics of using a Mac are that your hands are rested on a surface, and that lifting your arm up to poke a screen is a pretty fatiguing thing to do.” (Of course, this is directly contradicted by the fact that Apple sells its own keyboard for the iPad.)

The ergonomic truth is somewhere in the middle. I wouldn’t want to use a Mac with a touchscreen as my only form of interaction, to be sure. But when I’m using my iPad with an external keyboard, I don’t find it a fatiguing and unpleasant experience. If all my devices supported touch and traditional pointing devices, there would be times when each method was the most convenient one. (When I used a Chromebook with a touchscreen, I found myself reaching up to casually scroll or zoom documents… gestures that iOS trained me to internalize.)

The real hurdle to supporting touch on iOS is ergonomics of a different sort, namely the ergonomics of building interfaces designed to be manipulated by fingers instead of cursors. Ten years ago, when the App Store was about to open its doors for the first time, developers spent a great deal of time trying to understand just how the iPhone’s touchscreen wasn’t like their Mac’s screen. At the time, Iconfactory developer Craig Hockenberry told me about how he was spending a lot of time measuring his fingertips and trying to understand just how large items needed to be on screen in order for them to be activated by our fingers.

macOS and its apps just aren’t created with fingers in mind, unless those fingers are sliding over a trackpad or grasping a mouse. But beginning next year, the Mac will potentially be flooded with apps that were originally designed for touch-based devices. Yes, just as with the four new Apple apps in macOS Mojave, they’ll support cursors and the menu bar and keyboard shortcuts. But they will have been born of the touchscreen… and that could make a huge difference.

A convertible Mac?

Once a critical mass of Mac apps have been born of iOS, things start to get interesting. A Mac with a touchscreen today seems like a weird idea, but would it be weird to touch a screen that’s running an app that was originally designed to work with touch?

Again, I’m thinking more of the addition of touch to the existing mouse-and-keyboard paradigm, not its replacement. But there is a class of laptop that Apple hasn’t made, that might be enabled by this scenario: a convertible laptop. These devices are laptops first, but they’re tablets second—you either detach their keyboards or flip the keyboard behind the screen so that you can hold the device like it’s a tablet, but a bit thicker.