Yes, this is very standard practice. You can still learn a lot with a small sample size and no control, especially when you don't know much. It's a big deal th

Yes, this is very standard practice. You can still learn a lot with a small sample size and no control, especially when you don't know much. It's a big deal that they are able to see a full on reversal of Horvath's clock whether or not it was in a handful of people or a thousand!