Unless you happen to be a very concentrated rhetoric genius, you shouldn’t record voice messages.
"Hi Emily, ummm, I just wanted to know. Oh wait, my train is here. (...) Okay, wait haha, now I totally forgot what I wanted to ask you. Ummmmm. Hmmm. Hmmmmmmm. April wanted to know if have time next, umm... I think Saturday. I forgot the time right now. So, yeah. That was it. Byee."
