It might be speculation or error. For example, in anthropology, the Hopi tribe of Native Americans are often pointed to as a peaceful tribe. But “Noble Savage” anthropological mythology, popular starting in the 19th century is tied into this, reinforced by fictional stories such as Tarzan and Victorian Romanticism seems to tie in..
Yet, looking at today’s behavior and/or animal behavior and using that as a filter through which to view our nature-without-civilization/religion/etc is also a speculation or error to wach out for.
So, “check your assumptions”.
Hard in practice but it’s worth working at.