Limitations and future directions
While ReAct is a powerful framework, it has certain limitations:
- Dependency on external tools: ReAct’s effectiveness is partly dependent on the capabilities and reliability of the external tools it uses
- Error propagation: Errors in tool use or interpretation of observations can propagate through the reasoning process, leading to incorrect conclusions or actions
- Token limitations: The iterative nature of ReAct can lead to long sequences of text, potentially exceeding the token limits of some LLMs
- Computational cost: Multiple rounds of reasoning, action, and observation can be computationally expensive, especially when using LLMs or complex tools
- Prompt engineering challenges: Designing effective ReAct prompts that properly guide the LLM’s reasoning and action selection can be challenging and may require experimentation
Figure 22.1 shows the limitations of ReAct pattern:

Figure 22...