[yardie]

There are style markers (the writer's voice) that are in the paper no matter how it is edited. This is how critics and editors can tell when a book is written by the real author and when it is ghostwritten. The only way it's possible to avoid this is to digest a lot of material by the original author so you learn to become that voice.

This is also prevalent in song lyrics. You can hear when a rapper, for example, is using their own material rather than a ghostwriters. The flow and definition will be really different.