In conclusion, we may recall the purpose of the discussion, the precise formulations of the laws of red-shifts and of nebular distribution, using two different scales of distances corresponding to alternative, possible interpretations of red-shifts. It was hoped that the wrong scale, the wrong interpretation, might lead to anomalies or discrepancies which could be detected or at least suspected. The hope is only partially realized. Suspicions are aroused, but they have not been fully substantiated. The observations now available furnish a consistent picture on either scale.
The facts of the case may be presented in a brief table where the laws are expressed both with symbols and with numerical terms. The table also includes the elements derived from the recession factor which identify our universe among the possible worlds offered by relativistic cosmology. The unit of time is the year, and the unit of distance, the light-year, except that the mean density is expressed in grammes per cubic centimetre.