Jo Wolff: Having your laptop run out of power is a good sign as it probably means you’ve achieved a high degree of concentration and flow. Having your phone run out of power, though, is a bad sign, as it probably just means you’re not really in control of your life.

Having your laptop run out of power is a good sign as it probably means you’ve achieved a high degree of concentration and flow. Having your phone run out of power, though, is a bad sign, as it probably just means you’re not really in control of your life.