So when you evaluate the next big thing, ask the Christensen question: What job is it designed to do? Most successful innovations perform a clear duty. When we craved on-the-go access to our music collections, we hired the iPod. When we needed quick and effective searches, we hired Google. And looking ahead, it’s easy to see the job that Square will perform: giving people an easy, inexpensive way to collect money in the offline world.
But what “job” did Second Life perform? It was like a job candidate with a fascinating résumé—fluent in Finnish, with stints in spelunking and trapeze—but no actual labor skills. The same was true with the Segway. No one was interested in employing a $5,000 walk-accelerator.