Steve Dembo tells it like it is
While his point is a bit overstated, his examples are spot on.
Teacher B goes to a conference and attends a session about forming a personal learning network. He loves the idea and jumps on board. He registers for Twitter, joins a few communities, creates his own blog. He starts getting all these crazy ideas for doing things differently with his students. However, whenever he brings up an idea to his department head, he gets shot down.
