To understand these qualities and their application is a challenge to current software development research. Samplings Linux is subversive. Other significant developments include the TeX and LaTeX typesetting systems, large portions of the Unix operating system, and the body of communication software that evolved to become the Internet. Software created by hackers has in common such usage properties as tailorability, adaptability and openness. Commercial software, on the other hand, favours such qualities as extensibility, completeness and immutability.
Software created by hackers often requires a steep learning curve, and has little visual appeal.
Explaining these findings warrants further research. He didn't copyright. He made that openly available. And that's what has fuelled a great deal of the network development, and all the innovative ideas. There is a continuing ethic in the community to give back to the network what it has given you.