Hargarten observed that the impediments to publishing seem to be lessening, and that the work of Cherpitel and others is vital.
Hargarten worried about the impediments, and loved Cherpitel's work. 
mnli hypothesis: Hargarten worried about the impediments, and loved Cherpitel's work.  premise: Hargarten observed that the impediments to publishing seem to be lessening, and that the work of Cherpitel and others is vital.