You're right, it's more due to the fact that Observable requires you to explicitly export variables. However, limiting it to one has a couple advantages: 1. Yo

You're right, it's more due to the fact that Observable requires you to explicitly export variables. However, limiting it to one has a couple advantages: 1. You don't recalculate other variables if only one needs to update. For example, if a cell exports two variables, and a dependency of one of them updates, you're forced to re-evaluate the whole cell. 2. I think the UX plays out simpler if you limit it to one variable. It basically reads like `myVar = {...}` at the top of the cell. It's a bit trickier if you try to support exporting multiple variables at once. 3. If you find yourself needing to tie several values together, you can still manage it by exporting a single dictionary value!