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  <tmdoc-title|Why freedom is important for scientists>

  One major objective of <TeXmacs> is to promote the development of free
  software for and by scientists, by significantly reducing the cost of
  producing high quality user interfaces. If you plan to write an interface
  between <TeXmacs> and other software, then please contact us.

  As a mathematician, I am deeply convinced that only free programs are
  acceptable from a scientific point of view. I see two main reasons for
  this:

  <\itemize>
    <item>A result computed by a \Pmathematical\Q system, whose source code
    is not public, can not be accepted as part of a mathematical proof.

    <item>Just as a mathematician should be able to build theorems on top of
    other theorems, it should be possible to freely modify and release
    algorithms of mathematical software.
  </itemize>

  However, it is strange, and a shame, that the main mathematical programs
  which are currently being used are proprietary. The main reason for this is
  that mathematicians often do not consider programming as a full scientific
  activity. Consequently, the development of useful software is delegated to
  \Pengineers\Q and the resulting programs are used as black boxes.

  This subdivision of scientific activity is very artificial: it is often
  very important from a scientific point of view to know what there is in the
  black box. Inversely, deep scientific understanding usually leads to the
  production of better software. Consequently, I think that scientists should
  advocate the development of software as a full scientific activity,
  comparable to writing articles. Then it is clear too that such software
  should be diffused in a way which is compatible with the requirements of
  science: public availability, reproducibility and free usability.

  <tmdoc-copyright|1998\U2021|Joris van der Hoeven>

  <tmdoc-license|Permission is granted to copy, distribute and/or modify this
  document under the terms of the GNU Free Documentation License, Version 1.1
  or any later version published by the Free Software Foundation; with no
  Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
  Texts. A copy of the license is included in the section entitled "GNU Free
  Documentation License".>

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