Instruct: Classify a review into positive or negative sentiment.
Query: Serious Fun

Having worked with Leslie on the first 301 book, I can testify that she has an in-depth understanding of the true importance of fun in Organizational Development. This is reflected in her writing, which is solid, thoroughly researched, and something to base decisions on. It is not conjecture or wishful thinking -- Leslie does her homework. In fact, the extent and quality of her thinking and the rigour she brings to her work is matched only by her own desire to have fun!Many professionals in the world of Organizational Development have met Leslie, and I have a feeling most will echo these thoughts.