Even if you don’t understand the code, you can be sure the community will alert each other to problems. In open-source software, you can say for sure that nobody is passing your personal details on because the codebase is publically available. In either case, you have to take the word of the maker because nobody can examine the source code. We have Tim Cook’s word that Apple does not pass on your messages to the NSA, and to be clear we believe him. In open-source software the community supports itself. In closed-source software, you depend on Apple, or Microsoft, providing support for both the operating system and its ability to run your apps. The new version, called Linux Mint with MATE interface, is hugely popular. When Ubuntu rolled out its Unity interface, some users created an alternative (called a fork) that swapped out Unity for the older Gnome 2 interface. When Microsoft rolled out the Windows 8 interface, it confused many users. Open source software is more flexible than closed-source software.