Z:gnu-www-ja-google-engineering-talk--675202-Freedom 0 is needed for a comp/en

Freedom 0 is needed for a completely different reason: so you can control your own computer. If you are restricted in when or how much or how you can run the program, clearly you're not using your computer in freedom. So Freedom 0 is obvious, but freedom 0 is not enough, because with Freedom 0 all you can do is use the program the way it was programmed by its developer. You're free to do this [makes hand sign] or nothing. To really be free, you've got to be in control of what the program does, so you need Freedom 1, which is the freedom to help yourself, the freedom to study the source code and then change it to do what you want.