Many times ‘change’ is just looking for the right vehicle or infrastructure to prosper. Providing a low cost, easy to use, widely available tool can create the type of macro change necessary to impact a society. This is one reason why apps have so much potential. With more people using smart phones and downloading relatively easy/inexpensive apps – we can share data and enact change with these simple tools. I love the example of the CDC’s campaign for washing hands which has been a big success. Washing hands. So simple and yet it needed that designed interference (advertising) to enact the mass changes.