reducing back to fixed precision at the end. Often, particular implementations fall short of theoretical ideals. Photocopying, photography, video, and miscellaneous postings Successive generations of photocopies result in image distortion and degradation. It has been documented that successive repostings on Instagram results in noticeable changes. Likewise, repeated postings on YouTube degraded the work. Similar effects have been documented in copying of VHS tapes. This is because both services use lossy codecs on all data that is uploaded to them, even if the data being uploaded is a duplicate of data already hosted on the service, while VHS is an analog medium, where effects such as noise from interference can have a much more noticeable impact on recordings. See also Signal-to-noise ratio Editing digital images Lossless data compression Data degradation Data loss Software rot I Am Sitting in a Room The Disintegration Loops Ship of Theseus Notes External links Data compression Copying