Z:gnu-www-ja-free-software-even-more-important--1a1ff2-A free program allows you to t/en

A free program allows you to tinker with it to make it do what you want (or cease do to something you dislike). Tinkering with software may sound ridiculous if you are accustomed to proprietary software as a sealed box, but in the Free World it's a common thing to do, and a good way to learn programming. Even the traditional American pastime of tinkering with cars is obstructed because cars now contain nonfree software.