Why is Grendel a flat character in Beowulf?

What can be concluded about rainsford from the narration

With the extra income, the bookers moved to a housing project. "loveman's village was brick," wash said, "and it was warm and well lit. there was a bathtub. it had hot and cold running water. there was a gas heater with a thermostat that came on whenever it got cold." how does this excerpt readers make a personal connection to the story?

Don't eat the mushroom its poisonous