So we know about ordered lists, namely, arrays. This type of list, however, is a different story.

Hashes are unordered lists of values, in which each value has a key that points to it. Again, how might we create such a hash?

Spot on! {} creates an empty hash.

Psst: we've also used {} to declare code blocks but, this time, we're assigning the braces to a variable instead of placing them after a method.

Things have changed since we've created an empty array, haven't they?