for anything involving concrete deliverables and obligations, I really like having a written log. Like you say, it also forces communication to be more explicit

for anything involving concrete deliverables and obligations, I really like having a written log. Like you say, it also forces communication to be more explicit. It's easy to handwave details away in voice. OTOH something like story ideas sounds like the kind of thing that would benefit from voice. Situations where things aren't already spelled out nicely, where rapid feedback and iteration are valuable.