A little while ago, I gave Fedora Silverblue a try, and it felt really futuristic. By that, I mean that it was my first taste of what an “immutable” desktop is. Right now, operating systems like Windows, macOS, and most Linux distros are “mutable,” meaning you can modify the system files and install apps like “normal.” Fedora wants to make its operating systems “immutable,” meaning that all the system files are read-only, meaning you can’t install apps; they live “outside” the OS’s files.