Rarely do we get everything right on the first go. The product or service which you are using is an outcome of trial and error. These errors though inherent are not intentional. They happen either due to lack of knowledge, nonavailability of knowledge or absence of any knowledge. Thus in such cases, the only option available is to make repeated yet varied attempts to attain success. Each failed attempt is an opportunity to analyze the failure, make the change and try again, thus discovering new knowledge in the process. The new knowledge tells us about what works and what does not and how things fit in. With each new discovery, the knowledge evolves and the learner comes closer to reaching the goals. In the process, however, there is every possibility that a solution may be accidentally discovered. However, the learner needs to be observant, ready to learn, be prepared to conduct the experimentations in a systematic and repeatable manner but with variations. Last but ...