Mmm. [He nods.] Janets are a sort of universal mainframe slash digital assistant, from back home. Demons and angels both use them to maintain human environments. They can create anything - I think Heaven has them do it for the humans' sake, we always just used them for us.

[Though to be fair, Michael doesn't actually know anything about how the Good Place is run. His neighborhood was, perhaps, more a reflection on what he thought an ideal place for humans would look like.]

One time my Janet had an error where she could only make cacti. [He smiles.] Really frustrating at the time, but it was funny in retrospect.