> Say the user has three given names and a family name. For whatever reason, she puts double spaces surrounding the two middle names, but she didn't last time. Or jams them together, maybe with another punctuation. Are those semantically meaningful differences? Do the spaces indicate we have two separate people? Would a shortened form for one of the names be meaningful? Or if she misspells the abbreviation for "Marquise"; is that part of her name now? Etc.

Why do you care, though?