I think it's obvious that mobile & desktop OSes need to essentially merge to a substantial degree. But the idea that you should use one and only one control sc

I think it's obvious that mobile & desktop OSes need to essentially merge to a substantial degree. But the idea that you should use one and only one control scheme / UI in every use case is just dumb. There's not going to be one universal way for humans to interact with a computer, period. Sometimes touch will be used, sometimes keyboards & mice, sometimes voice, sometimes other methods of control. It's vastly more valuable to figure out how to seamlessly transition between different modes of use/control and to maximize the utility of each mode than to try to engineer some grand compromise design that can be used in all modes but takes advantage of none of them very well. Moreover, Microsoft needs to learn a very hard lesson here. If you want to change things you need to transition. UI reboots are like system rewrites, they carry a lot of the same risks, if you commit to the new system before it's mature without giving people the option of using the old system you'll often times end up with rejection instead of acceptance. Microsoft has developed a bad habit lately of ramming new ways of doing things down users throats without any time to get used to the changes. The only people who can get away with bullshit like that are Apple, and Microsoft is very definitely not Apple.