Wait a minute... it's meant to be reprogrammed? SO THAT'S WHY I was pushed to try to use it (but didn't see the point after a few minutes) It's self contained

Wait a minute... it's meant to be reprogrammed? SO THAT'S WHY I was pushed to try to use it (but didn't see the point after a few minutes) It's self contained AND REPROGRAMMABLE????? Holy cow!