Core Viewpoint - Despite significant investments from venture capital firms and large tech companies, humanoid robots still struggle to achieve dexterity, which is essential for performing tasks in human environments [2][3][4]. Group 1: Historical Context of Humanoid Robots - The concept of humanoid robots has been explored for over 65 years, with early developments including a computer-controlled robotic arm capable of stacking blocks in 1961 [3]. - The evolution of humanoid robots has seen contributions from various institutions, including WABOT-1 from Waseda University in the 1970s and Honda's ASIMO in 2000 [11][12]. Group 2: Current State and Future Predictions - Humanoid robots are currently in the early stages of development, with Gartner indicating they have not yet reached their peak hype [4]. - Companies like Tesla and Figure are optimistic about the economic potential of humanoid robots, with predictions of creating trillions in revenue [9][10]. Group 3: Challenges in Dexterity - Achieving human-level dexterity in humanoid robots remains a significant challenge, as current robotic hands lack the necessary finesse and adaptability for a wide range of tasks [23][24]. - Existing methods for training robots often rely on visual demonstrations, which do not adequately capture the tactile feedback necessary for dexterous manipulation [27][28]. Group 4: Learning Approaches - The industry has seen a shift towards end-to-end learning methods, where robots learn from observing human actions, but this approach has limitations due to the lack of tactile feedback and precision [30][31]. - Successful applications of end-to-end learning in other fields, such as speech recognition and image labeling, highlight the importance of pre-processing and human-like structures in achieving effective learning outcomes [49][50]. Group 5: Importance of Tactile Feedback - Human dexterity is heavily reliant on rich tactile feedback, which current humanoid robots do not possess, leading to challenges in replicating human-like manipulation [51][52]. - The complexity of human touch perception and the integration of multiple body parts in dexterous tasks further complicate the development of humanoid robots capable of similar actions [52].