In some ways, the man's eccentricities impeded the advance of his music, especially in later years.
Unfortunately, the pace of reforms has been slow and subject to many restrictions, disincentives and taxes that have impeded the advance of the private economy and desperately needed growth.
Mr. Ravicher, a patent lawyer himself, says he believes that the current system actually impedes the advance of software technology, at the same time that it works quite nicely to enrich patent holders.
Millions more people are expected to get their genes decoded in coming years, and the fear is that this avalanche of genetic and clinical data about people and how they respond to treatments will be hopelessly fragmented and impede the advance of medical science.
Current practices of proprietary databases may hinder interpretation of genomic data and impede the advance of personalized medicine.
By then an early winter had set in, greatly impeding the German advance and finally bringing it to a halt at the outskirts of Moscow in early December.
For the most part, protesters remained peaceful during Thursday's confrontation, though at one point, an activist set fire to a heap of tires that were part of a blockade set up to impede the progress of advancing officers.
Now, however, because of Judge Hittner's position, the least significant of the cases that have been brought is impeding the most important advance in the government's investigation since it began two years ago.
Such self-affirming, or perhaps self-serving, bias can impede the progress of research in new fields and studies covering new substances, thereby resulting only in incremental advances, at best, from the research investments.
