The context of the following conversation is Alex had a fable for her that explained a lot of what was happening in the world.:
Alex says So my teacher gave me this cheat sheet in case we  need it.
The friend responds Does that show everything that is going on in the world right now?.
Alex responds It shows all the oil deposits and the coal mines on the globe right now that we know of.
The friend responds I guess that will come in handy for the test then.