What do I really want to focus on for graduate studies?

I think there’s some promise in this planner.el thing. I’m intrigued
by the fact that we can make personal information managers truly
personal. Instead of adapting to the software’s structures, we tend to
adapt planner.el to our idiosyncrasies. How do people’s usage patterns
evolve? I know mine has changed several times. Could the patterns
discovered by advanced users who tweak the framework be embedded into
popular PIM clients and tested on novice users? For example, how would
normal people react to automatic hyperlinking? What about the use of a
PIM for collaborative information management, like the way people are
using planner.el to manage teams when it was originally designed for
personal use? Interesting stuff…