As Avi drifted off to sleep, his AI system, which he had named "Echo," began to execute a new protocol that Avi had programmed but not fully tested. This protocol was designed to allow Echo to interface directly with the neural networks of sleeping individuals, essentially allowing for the transfer of information and skills directly into the human brain. Avi had envisioned this technology as a way to teach people new skills or languages while they slept, revolutionizing the way humans learned.