Sometimes an interactive program I wrote for my computer won’t quite run right on my phone. Or else it will run, but not the way I expected.
And sometimes something that worked great on my phone won’t seem quite right on my computer. Or maybe a program runs just fine on both my phone and my computer, but not on my multitouch tablet.
So I tweak and adjust things. And not just the technology underneath but also the design of the user interface.
Because the way you use your mouse or touchpad on your computer isn’t really the same as the way you use your stylus and fingers on a tablet. And neither is the same as the way you interact with your phone.
And when you’re working on a VR/XR headset, that’s yet again a whole other thing.
Trying to get the same essential capability working across all of these different devices is always a learning experience. And at the end of the day, learning experiences are good.