  The main purpose of this paper is to correct an error in the previously
submitted version [*] := arXiv:2004.13749v1. [*] had been already accepted for
publication in a scientific journal, but withdrawn by the author after the
discovery of the error. For the withdrawal from arXiv we follow their
preference to maintain what remains of interest. The background of the open
problem, and the brief survey which comes with it, stay relevant. These keep
their place in the present corrected version. The same is true for two new
modified odds-theorems proved in [*] since they are applicable for several
different stopping problems. Then, and in particular, we show where exactly the
error occurred in [*], why it invalidates its main theorem and title,and what
the conclusions are. The final discussion of optimal strategies without value
in Section 4 is believed to be of general independent interest.
