When I first read the post by Richard Hake in IFETS-DISCUSS, I was enlightened by the immerse wisdom embedded in the quotes. Hence I asked Richard's permission to repost it here.
Change is difficult and risky. But, every now and then we see disruptive changes. Harvesting and delivery of ice blocks was replaced by refrigerators. Typists as a job disappeared. Film-based photography is being replaced by digital photography. Plastic records replaced by CD which will be replaced by MP3. Traditional telephone will be replaced by Voice Over IP such as Skype. The list goes on.
Clayton Christensen talked about how businesses may be disrupted by new technology. May be there are lessons we can learn from business in implementing changes in education.