This document discusses challenges to learning and training in both classroom and corporate settings. It defines learning and training as communication processes involving transferring content to learners who then retain and apply what they've learned. For optimal learning, learners must approach with open minds and strong desires to learn. Effective teaching methods involve participative and experiential learning like lectures. Assessments are important to measure learning. The document also discusses concepts like mental models, systemic thinking and personal mastery from Peter Senge's Fifth Discipline as important for shared learning.