I think many here will find this a fascinating conversation with astrophysicist Jonas Enander. He discusses black holes and also his writing process with Scrivener and DEVONthink. I especially appreciated his comments about separating the writing process (Scrivener on the Mac) from editing (on iPad to shift context, something that @MacSparky mentions often).
I also leaned a few things about black holes. 
Enjoy.