  We argue that Solar system tests do not rule out 1/R gravity at least due to
the reason addressed in Phys. Rev. D 74 (2006) 121501 [astro-ph/0610483] (ref.
[1]) and subsequent published papers.
  Ref. [1] has not only modified the Einstein-Hilbert action but also has
changed the boundary conditions since they altered the equations of motion. In
Einstein-Hilbert action equations are second order, so the fall off of the
fields suffices to single out a unique solution. In 1/R gravity the equations
are fourth order, so we should impose additional boundary conditions. Perhaps
the boundary condition we must impose is that the abrupt change in the second
derivative of the metric near the surface of the Sun remains intact by adding
`1/R' corrections to the equations of motion. The solution of 1/R gravity with
this boundary condition remains consistent with the solar system tests.
  Ref. [1] assumes that as soon as they perturbatively modified the equations
then the Ricci scalar becomes smooth on the surface of the Sun. This assumption
is simply wrong because the boundary conditions and equations of motions are
two different entities.
