  We present a short re-evaluation of a recently published time delay estimate
for the gravitational lens system HE 1104-1805 with emphasis on important
methodological aspects: bias of the statistics, inconsistency of the methods
and use of the purposeful selection of data points(or so-called "cleaning") at
the preprocessing stage. We show how the inadequate use of simple analysis
methods can lead to too strong conclusions. Our analysis shows that there are
indications for the time delay in HE 1104-1805 to be between -0.9 and -0.7
years, but still with a large uncertainty.
