The opportunities offered by technology are growing exponentially at a pace faster than most of us can keep up with. The vision and devices of gurus like Steve Jobs are catalysts bringing an avalanche of technological innovation. For example, a group of researchers recently conceived a simple, inexpensive ball lens embedded in a rubber sheet that, when attached to an iPhone lens, turns the device into a microscope. Practical and low cost, it could be used by doctors in remote and impoverished areas. The idea opens up potentially exciting possibilities.