A smartphone links patients' bodies and doctors' computers which in turn are connected to the Internet which in turn is connected to any smartphone anywhere. The new devices could put the management of an individual's internal organs in the hands of every hacker online scammer and digital vandal on Earth.
Bottom line is I didn't return to Apple to make a fortune. I've been very lucky in my life and already have one. When I was 25 my net worth was $100 million or so. I decided then that I wasn't going to let it ruin my life. There's no way you could ever spend it all and I don't view wealth as something that validates my intelligence.