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Re: Org schemas we talked to be non-free, was: [ELPA] New package: repol

From: Richard Stallman
Subject: Re: Org schemas we talked to be non-free, was: [ELPA] New package: repology.el
Date: Mon, 25 Jan 2021 00:53:57 -0500

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  > Forgive me for a possibly naïve question, but why on earth would you
  > want to modify a schema?  It's the same as modifying a physical law.

  > Would you say that E = mc² is "non-free" because it cannot be
  > meaningfully modified at will?

We can't modify physics, but a physicist might very well want to modify
the equation E = mc².  For instance, perse might want to use natural units,
in which c = 1, which would give E = m.

Then perse might want to generalize to handle an object not at rest, by
including its momentum.  That gives E² - p² = m².

Or perse might want to express that in 4-dimensional covariant form as

    μ    2                                    2    2
p  p  = m   = p  p  - p  p - p  p - p  p   = E  - p
 μ             0  0    1  1   2  2   3  3

And that's considering only _valid_ equations for relating mass and
energy.  I might want to modify the equation to make it be valid for
some other purpose, or to present an instance of an equation which is
not valid.

Dr Richard Stallman
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)

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