Definition
Reflex Agents are AI systems that select actions based solely on the current percept, ignoring history and future planning (rule-based action).
Why It Matters
They are highly efficient for simple, fast reactions, but unable to navigate complex or dynamic environments.
Core Concepts
- Reflex Agent (Stimulus-Response): Operates on “if-then” rules or direct mappings (e.g., a thermostat). It is fast and efficient but inflexible in novel environments.
- Hybrid Architectures: Most complex systems (including humans) use both—reflexes for immediate, low-stakes tasks and deliberation for high-stakes, novel planning.