Despite the title of the post ("98% of innovation"), I think there are some truths in the article.
I think the best designs and ideas come about through a process which is not unlike evolution. You might start with something good in isolation, but being subjected to many differing viewpoints and perspectives will challenge your idea, and force you to flesh it out in ways you may never have done on your own.
In keeping with the evolution analogy, this type of force causes your original concept to mutate into something which is (often) superior.