What Doesn't Happen
Next we'll complete our expression with this:
let bravo = alfa;
Becasue alfa became the owner of our String value
when we did this:
let alfa = String::from("apple");
It's natural to think bravo would become
the owner of alfa when we completed our
expression with let bravo = alfa;
If that were the case, we'd get something that looks like this:

We would then be able to get at our String
value from both alfa and bravo. (alfa
would be direct and bravo would go through
alfa).
But, that's not what happens.