We've said "I promise" since we were small children trying to get out of trouble. When we were teens adding emphasis to a story. We made a promise when we got married. And we promised a kid we'd get him a dog...which we finally did -- years after our first promise. 

And then there are the promises we make when we've lost someone's trust...

What's the value of a promise? And what good does it do to extract promises from someone who is unable to make good on that promise? Maybe there's a better way. 

Listen in!