  The theorem we prove is a slight strengthening of some results by Just,
Miller, Scheepers and Szeptycki [JMSS]. We use the Michael technique instead of
the combinatorial approach in the literature.
  Comments by the submitter:
  This short unpublished paper, written in 2002, is a cornerstone in the study
of selection principles and classic covering properties. It is the first to
solve the Hurewicz Problem, by showing that there is, in ZFC, a real set with
Menger's covering property (indeed, in all finite powers) but without
Hurewicz's covering property. Unfortunately, web searches begin to miss this
paper, and I sought, and received, permission from the authors to store this
paper in the ArXiv, providing it a permanent link. The author's decision to not
publish this paper, in light of some later stronger results by other authors
(including myself), is a true act of generosity. Hopefully, this submission
does some justice to their achievement.
