No one thought a numerical algorithm that came from an alien world could cause so much trouble. When Dill and Jommer Dega used it to build an AI, they didn't know the full scope of what it could do. More than twenty years would pass before the AI they constructed would show them. Their brother, Schaz, who was running the galactic government behind the scenes for their father, counted the AI as a friend, but neither he nor the formidable anthropic intelligence who advised him understood how easily good intentions can lead to disaster, and their fates would be intertwined as the phenomenal powers each of them possessed worked together to produce a series of crises that would never be repeated. "The Thayan Algorithm" is the fourth and final installment of Jommer Dega's great history of the first family of humankind, the true story of what happened in those few short years when everything in the galaxy changed for the last time.