Right conclusion, wrong argument. Brains are also predictive models based on patterns they've already seen. AI isn't human-level yet because brains have several orders of magnitude more weights, constantly train by self-optimising their circuitry, and potentially even use quantum effects to compute. Oh, and they have lifetimes of real training data in a human body. All that on less power than a 20" monitor. Good luck catching up with that.
Human brains are more than just predictive models, as far as we can tell.
The brain also performs a wide range of other processes, including:
- Perception
- Attention
- Memory
- Decision-Making and Planning
- Emotion & Motivation
- Language and Communication
- Social Cognition
- Motor Control
- Imagination & Creativity
- Self-Awareness and Metacognition
Prediction is one mechanism that supports perception, action, and learning, but the brain also feels, remembers, plans, imagines, and relates.
That's not how I meant 'predictive model'. But certainly there's more to cognition than inferring state X' from X.