The delethis isn't very smart, as to be expected of an animal, but it is shockingly good at most forms of math. If one can train a delethis to pay attention for more than a few seconds one would find out that delethis are natural mathematicians. Why a large insect has evolved this feature is unknown. Upon the death of their owner a delethis will rush over put their hands on their owner and begin to pull out chunks of meat to consume. They're not very loyal, but it's ok. We love them for this.