Great article. Yes is amazing how humans are often blind to obvious (with hindsight) and relatively simple innovative ideas. Another good example of this is the

Great article. Yes is amazing how humans are often blind to obvious (with hindsight) and relatively simple innovative ideas. Another good example of this is the - wheeled suitcase - not invented till 1970!! http://edition.cnn.com/2010/TRAVEL/10/04/wheeled.luggage.anniversary/index.html http://edition.cnn.com/2010/TRAVEL/10/04/wheeled.luggage.ann...