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Alan Kay

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Perl is another example of filling a tiny, short-term need, and then being a real problem in the longer term. Basically, a lot of the problems that computing has had in the last 25 years comes from systems where the designers were trying to fix some short-term thing and didn’t think about whether the idea would scale if it were adopted. There should be a half-life on software so old software just melts away over 10 or 15 years.
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ACM Queue A Conversation with Alan Kay Vol. 2, No. 9 - Dec/Jan 2004-2005

 
Alan Kay

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The term "free software" has an ambiguity problem: an unintended meaning, "Software you can get for zero price," fits the term just as well as the intended meaning, "software which gives the user certain freedoms." We address this problem by publishing a more precise definition of free software, but this is not a perfect solution; it cannot completely eliminate the problem. An unambiguously correct term would be better, if it didn't have other problems.

 
Richard M. Stallman
 

Over the years, many companies have contributed to free software development. Some of these companies primarily developed non-free software, but the two activities were separate; thus, we could ignore their non-free products, and work with them on free software projects. Then we could honestly thank them afterward for their free software contributions, without talking about the rest of what they did.
We cannot do the same with these new companies, because they won't let us. These companies actively invite the public to lump all their activities together; they want us to regard their non-free software as favorably as we would regard a real contribution, although it is not one. They present themselves as "open source companies," hoping that we will get a warm fuzzy feeling about them, and that we will be fuzzy-minded in applying it.
This manipulative practice would be no less harmful if it were done using the term "free software." But companies do not seem to use the term "free software" that way; perhaps its association with idealism makes it seem unsuitable. The term "open source" opened the door for this.

 
Richard M. Stallman
 

The current term of protection for software is the life of an author plus 70 years, or, if it's work-for-hire, a total of 95 years. This is a bastardization of the Constitution's requirement that copyright be for "limited times." By the time Apple's Macintosh operating system finally falls into the public domain, there will be no machine that could possibly run it. The term of copyright for software is effectively unlimited.

 
Lawrence Lessig
 

I would dramatically reduce the safeguards for software — from the ordinary term of 95 years to an initial term of 5 years, renewable once. And I would extend that government-backed protection only if the author submitted a duplicate of the source code to be held in escrow while the work was protected. Once the copyright expired, that escrowed version would be publicly available from the copyright office.
Most programmers should like this change. No code lives for 10 years, and getting access to the source code of even orphaned software projects would benefit all. More important, it would unlock the knowledge built into this protected code for others to build upon as they see fit. Software would thus be like every other creative work — open for others to see and to learn from.

 
Lawrence Lessig
 

In 1998, some of the people in the free software community began using the term "open source software" instead of "free software" to describe what they do. The term "open source" quickly became associated with a different approach, a different philosophy, different values, and even a different criterion for which licenses are acceptable. The Free Software movement and the Open Source movement are today separate movements with different views and goals, although we can and do work together on some practical projects.
The fundamental difference between the two movements is in their values, their ways of looking at the world. For the Open Source movement, the issue of whether software should be open source is a practical question, not an ethical one. As one person put it, "Open source is a development methodology; free software is a social movement." For the Open Source movement, non-free software is a suboptimal solution. For the Free Software movement, non-free software is a social problem and free software is the solution.

 
Richard M. Stallman
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