Great post! A related point: Be resourceful: We're in a sometimes unpredictable business, so always have a plan B, and even C for every project. Also -- invest in the best PR tools, including databases and apps, that enable you to do the busywork more efficiently, so you can concentrate on creative work.
You're only required to link to a post or article if you mention it or quote from it. If you were INSPIRED by it, it would be pretty ridiculous to have to attribute inspiration. Likewise, we'd require network TV shows that are "ripped from the headlines" to attribute their inspiration, too. Won't happen. BTW, just covered the topic on my PR Chicago blog today (no, I hadn't read this post, but I did link to some of the articles).
Schools are stifling intellectual curiosity with standardization, but, just as bad, parents are scheduling children so much that they don't have any time to just BE...to explore...to be creative...to imagine. 'Nuff said.
You have to know the rules, and how to play by the rules to be qualified to know when it's a good idea to break them.