Factual error: After Zidler tells Satine that she is dying, he is seen walking up a stairway past some sewing women. In an overview of the stairs, a stage light to the left has about a dozen or so frosted light bulbs in it. Frosted, tungsten light bulbs were not invented until the mid-to-late 1920s. Any electric light in 1900 would have had clear, carbon-filament bulbs. And no, those are not glass shades over the bulbs.