Agreed.

On Fri 01 Mar 2013 05:27:45 AM PST, Christopher Smith wrote:
> In doc/src/modules/physics/mechanics/index.rst:
>
> > +
> > +1.  describing the system's geometry and configuration,
> > +2.  specifying the way the system can move, including constraints on its motion
> > +3.  describing the external forces and moments on the system,
> > +4.  combining the above information according to Newton's second law
> > +    (:math:`\mathbf{F}=m\mathbf{a}`), and
> > +5.  organizing the resulting equations so that they can be integrated to obtain
> > +    the system's trajectory through time.
> > +
> > +Together with the rest of :mod:`SymPy`, this module performs steps 4 and 5,
> > +provided that the user can perform 1 through 3 for the module. That is to say,
> > +the user must provide a complete representation of the free
> > +body diagrams that themselves represent the system, with which this code can
> > +provide equations of motion in a form amenable to numerical integration. Step
> > +5 above amounts to arduous algebra for even fairly simple multi-body systems.
> > +Thus, it is tempting to use a symbolic math package, such as Sympy, to
> I think "desirable" is a better word. Using "tempting" is often
> followed by a reason why one should not fall to that temptation.
>
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>