The immediate feedback about how I did is nice, but also may pollute the data in a way. Once I got it right, I new to retry a very similar expression for the ne

The immediate feedback about how I did is nice, but also may pollute the data in a way. Once I got it right, I new to retry a very similar expression for the next 1-2 tries. But then, most people might actually know how to make human expressions naturally. Personally, I appreciated this as a tool to help me learn how to human. :-)