Hey -- very good questions. This article was a broad overview, and I wanted to get across the fundamental "physics" of concurrency more than specific solutions. Where I talked about solutions it was to illustrate how those principles operate.

I'm also not actually that knowledgeable about concurrency so I didn't want to say anything stupid. :D I'm more journalist than expert.

I've gotten many responses like yours, though. This subject probably deserves another round of research and a follow-on article or two.

Thanks!