is a physical system under the hood or something physical happening there and so it might take time for that physical thing to settle in and really get that measurement and if you you know read it off I don't know ten thousand times per second that might not be valid that might only be 10 or 100 independent readings really and if you then use the 10,000 readings instead of just the ones that are actually independent you'll become wildly overconfident in whatever it is that you're measuring rather than keeping a reasonable