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They did. It's called Windows RT, and later Windows 10 S. You have to use Edge as well.

If the device was ARM, the bootloader was locked into Windows.

It was in direct response to Chromebooks and Android tablets, and adopted the same business model as Google: free OS supported by the content they sold. Because it came on extremely low-end devices, people understood this.
Windows RT is dead and it was basically a Widows Phone like mobile OS, only for tablets.
Windows 10S can be upgraded to regular Windows that allows to run/install exe. applications.

Anyway he was most likely talking about the regular Windows 10 Home or Pro that runs on X86 computers.
 
Yes. Try doing a bit of research.

Seems like everything requires forwarding email to slack. You know what that requires? An email address from someone other than slack.

You are now blurring the line between the technology (email) and the UI (slack). I'm talking about the technology, not what app I choose to view my email in. I could email from the messages app if I wanted to with the right plug-ins.
 
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