doesn't challenge students to write functions that use callbacks from scratch

[jsms90]

Even students who don't fully understand callbacks are happily implementing them in their node projects, purely because they're copying the error first pattern that they've seen in multiple examples.

I worry that the same thing would happen when completing exercise 2, since the cb line is provided for them?

• https://github.com/foundersandcoders/mc-do-this-then-do-that/blob/master/exercise/exercise_2.js#L6
• https://github.com/foundersandcoders/mc-do-this-then-do-that/blob/master/exercise/exercise_2.js#L14
• https://github.com/foundersandcoders/mc-do-this-then-do-that/blob/master/exercise/exercise_2.js#L24