@Setanta,
Quote: Contrex's sentence is reasonable, but you have a point that the people themselves do not survive from the past.
This is the fella that was suggesting other folks' ideas on language were to be regarded as suspect.
'from the past' does not in any way indicate that these people survive from the past unless that is the intent, say, in a sci-fi situation. Then context would fill us in.
Google exact phrase search - "people from the past"
About 25,800,000 results