According to <https://github.com/jquery/jquery/blob/9434e03193c45d51bbd063a0edd1a07a6178d33f/src/event.js#L21-L27>
There are two functions in event.js in jquery that return true and false:
from events.js

```
function returnTrue() {
  return true;
}

function returnFalse() {
  return false;
}

```

I know they are good. But I don't understand the reasoning for this.