And the other reason why this is useful is kind of, well I guess you can see on the first pass it's useful because not one of these snapshots that test everything we've talked about so far, with respect to diabetes is taking your blood sugar at any one point in time and we know that your blood sugar changes through out the day changes depending on how active you are changes depending on what you might have just eaten so when you do blood sugar, you're just getting a sample you don't know where the blood sugar is through out the day, unless you just kept sampling which can get pretty annoying, you know, keep pricking your needle 