The first thing I do after buying a phone is to configure double tap as screen locking gesture.

Prevents power button wear from checking phone countless times a day.

A research paper about Reversing Myopia should contain a new and convoluted way to recover the old lens law.
Just kidding, it also contains a novel derivation of depth-of-field whose detailed notes I've already made public on bird site.

Can't wait for you to read my paper and tell your thoughts.