Yes, like any pervasive technology platform, the iPad does more than one thing. But usually, for a device like this, there's a killer app — the one reason you use to justify the purchase.

Early technology adopters and business analysts alike are betting that an Android device is the most likely candidate to emerge as an "iPhone killer."

Medical technology, such as genetic engineering, helps combat cancer and other killer diseases, and hence alleviate the suffering of patients, and add years to life expectancy.