Dr. Hulda Clark invented a way of finding the frequency bands at which various living things "broadcast". She says this about cockroaches: "I was determined to find a bandwidth for other living things. I found them for flies, beetles, spiders, fleas, ants. They were between 1,000,000 Hz and 1,500,000 Hz: cockroaches were highest amongst insects I tested." (The Cure for All Diseases, page 8).

It appears there's a correlation between the height of a creature's bandwidth, and its intelligence. That would mean that cockroaches, for their size, are remarkably intelligent. This is borne out by Liora's observations and mine.

How cockroaches communicate with one another, and humans, is amazing. Humans could learn so much by studying this.