  Nearly 30 years ago, J.P. Crutchfield and K. Young proposed in Phys. Rev.
Lett. {\bf 63}, 105 (1989) some supposedly novel measures of time series
complexity, and their relations to existing concepts in nonlinear dynamical
systems. At that time it seemed that the multiple faults of this paper would
make it obsolete soon. Since this has not happened, and these faults still
infest the literature on what is now called "computational mechanics", I want
here to rectify the situation.
