What makes a source credible?
Some important questions to ask yourself when checking if a source is credible are: Who is the author and what are their credentials? Is the author objective? What sources does the author cite? How recently was this report published?
What are different ways monsters function in folklore and myth?
There are many different theories about the ways monsters function in folklore, sometimes called Monster Culture. Monsters are almost always seen as something "other" in order to define cultural normativity. They embody the fears and anxieties of a culture. Monsters tend to police the borders of the possible, warning against violation of values, but also provide an irresistible space for fantasy. In this way, monsters can reflect many different important views of a culture.
What ecological function does high visual acuity serve and why did it evolve?
One purpose of high acuity is visual communication. Anthropoids use a range of facial expressions that are universally understood within its species to communicate things like submissiveness, aggression and sexual attraction. Living anthropoids have high acuity because this feature was present in a diurnal predatory ancestor.