Video prompt: He vigorously brushes snow off the windshield of a car with a small, worn-out scraper, his movements growing more frantic as the snow stubbornly clings to the glass. Around him, the wind howls, sending flurries swirling through the air and adding to the already thick layer of snow on the ground. Nearby, other cars are similarly buried, their shapes barely discernible under the heavy blanket of white. After several minutes of determined effort, he steps back, panting slightly, and wipes his brow with the back of his gloved hand. As he surveys his work, a look of confusion crosses his face. He glances around the parking lot, realization dawning as he spots his own car a few spaces away, equally buried in snow. With a resigned sigh, he trudges over to the correct vehicle, leaving a trail of footprints in the fresh snow, and begins the process anew, his breath forming small clouds in the chilly air.
Defect: unsmooth motion ( motion is correct)