Some times, you realize you have started working on a task/project without tracking it. It would be nice to have a CLI option to indicate that you actually started earlier. For instance

watson start --for 10min 'World Domination Project' +'first analysis'
watson start --since 14:35 'Work on personal organisation'

or something similar.

In the same way, the option can be useful for the stop command (e.g. back from lunch and see that your task is still started).