Explore a comprehensive lecture on differentiable associative memories, attention mechanisms, and transformers delivered by renowned speaker Yann LeCun. Delve into the motivation behind reasoning and planning, learn about inference through energy minimization, and understand the concept of planning via energy minimization. Discover the intricacies of differentiable associative memory and attention, followed by an in-depth look at transformer architectures and their various applications. Examine specific use cases including multilingual transformers, supervised symbol manipulation, natural language understanding and generation, and DETR (DEtection TRansformer). Conclude with insights on planning through optimal control, gaining a thorough understanding of these advanced machine learning concepts and their practical implementations.