Re: SI and nothing else

[LUDWIK KOWALSKI <KOWALSKIL@alpha.montclair.edu>]

On Oct 16, 1997 David wrote:
> James Wheeler already mentioned this but Planck units are the set of units
> one gets by setting c = h_bar = G = k (Boltzmann's constant) = 1.  This 
> system has no fundamental base units whatsoever.  Crudely speaking (i.e.
> up to factors of 2*[pi], etc.) one Planck unit of time corresponds to the
> period of a photon whose energy corresponds to the mass of a black hole 
> whose Schwarzschild radius is equal to the wavelength of the photon. ...

A system of units without a single basic unit is beyond my comprehension.
Last week I told students that a statement "force is 5" means nothing 
unless a unit is specified. Was I wrong?
                                                 Ludwik Kowalski
P.S.

Your photon is defined in terms of the black hole which is then defined
in terms of the same photon. What am I missing?