Clark tackles some pervasive misconceptions about the brain, about learning and training. The articles are short and to the point, with references that helped him form his opinions available for the reader to check if they want: 10% of our brain, digital means we learn differently, smile sheets = evaluation and the ever-pervasive learning styles and dozens more misconceptions to clear up and give us more solid footing. Good book! Highly recommend, whether you are in the training business or not