What developments in technology have caught you by surprise in the last couple of years? Follow-ups: What is happening faster than you expected? What did you e

What developments in technology have caught you by surprise in the last couple of years? Follow-ups: What is happening faster than you expected? What did you expect to be important/successful by now but it isn't? Data is getting less and less expensive to collect, but in our company's domain what is still unmeasured? What should we be measuring and why? If you were me, at this point in time and technology what would you be studying in your spare time to prepare to create really high value 2 or 3 years from now? Thinking of very narrow slices of technology landscape, where can I most profitably invest 100 hours of study time. [This is a smaller version of the previous question]