Indeed. Many brilliant, groundbreaking work is produced by geniuses who are lousy writers, so sometimes secondary sources are necessary to get past roadblocks.

Indeed. Many brilliant, groundbreaking work is produced by geniuses who are lousy writers, so sometimes secondary sources are necessary to get past roadblocks. Still, it's a good reminder to try reading primary sources, when so many people seem to be learning from screencasts and blog posts three degrees removed from them.