George Jefferson' s maid and flow is the pyschological significance of sustained learning such as reading for more than 10 minutes or writing for a sustained period of time. It's that getting in the groove and writing from the stream of consciousness or losing yourself in a good.
Flow is good and is something to aim for when students are engaged in reading or writing activities.
It is something to watch for and to encourage. To have ideas is to gather flowers. To think is to weave them into garlands. Off-list is fine.