The episode describes RevThink, a new framework that enhances the deductive reasoning capabilities of large language models (LLMs). RevThink leverages "reverse thinking," integrating both direct and reverse reasoning approaches to train the model. This multitask methodology significantly improves accuracy and efficiency, outperforming even much larger models trained with traditional methods, while requiring only a fraction of the data. Its scalability and effectiveness with smaller models make it particularly advantageous for resource-constrained applications, opening up new possibilities across various fields. Finally, ablation studies confirm the importance of each RevThink component for the model's success.