ME: You know, it's a piece of fiction. We don't actually have to get the ephemeris correct. We could just make it up.
MY BRAIN: But we found that website with the information all organized in nice tables. Just a little bit of of cut and paste in Excel and we'll know exactly how it all should go! It'll only take, like, half an hour. An hour, tops.
ME: Yeah, but we're spending time on figuring that out when we could be actually writing and advancing the story.
BRAIN: But it fits so well!
ME: Okay, yes, in some ways, but it's kind of inconvenient that the one thing falls on a Tuesday when--
BRAIN: Just tweak the story a little. That scene needed a better hook anyway.
ME: Can't we fudge things a little? For convenience?
ME: Nobody will care! Nobody will even notice!
BRAIN: IT ITCHES!
ME: Why are you subvocalizing in the voice of Bill Bailey?!
BRAIN: BECAUSE I'M INSANE!
ME: So long as we're clear on that.