  It is shown that what is commonly referred to as the MIT `bag' model of
hadrons is thermodynamically wrong: The adiabatic conditions between pressure
and temperature, and between pressure and volume imply the third, an adiabatic
relation between temperature and volume. Consequently, the bag model is
destitute of any predictive power since it reduces to a single adiabatic state.
The virial theorems proposed by the MIT group are shown to be the result of the
normal power density of states of a non-degenerate gas and not the exponential
density of states of the Hagedorn mass spectrum. A number of other elementary
misconceptions and inaccuracies are also pointed out.
