Complex sentence: It can calculate up to 1,000 logical decisions in the space of one second, and because of their immense logical capability, a major fear in the Perfect Atheist Society is that the Birdmen will be able to overthrow Dawkins and create their own society.
Split into simpler sentences: It can calculate up to 1,000 logical decisions in the space of one second. Due to their immense logical capability, a major fear in the Perfect Atheist Society is that the Birdmen will be able to overthrow Dawkins and create their own society.