Lecture 3 is on the topic of failure and risk. In our lecture, we start by focusing on some of the consequences of inaccurate accessments and poor designs. There are a plethora of examples which could escalate the cost of disasters to over 200 billion dollars. In our case study, the price of these disasters were even higher. Six were killed right after the space shuttle took off, within a period of 80 seconds. The redesign of the space shuttle  provided a lot of answers, but even more questions. As the complexity of a design increases, so does the risk. The consequences of these rocket failures are significantly amplified due to the immense cost and time required to build the rockets. I think a key part the professor was getting at was that we need a systematic way for engineers to detect failures in designs before disasters actually happen. FMEA/FMECA was the early systematic solution to detect these errors beforehand. A key component proposed in the professor's presentation was adequate experimentation/testing. This could mean building prototypes or various analysis of the design. These are ciritical to any design as they allow us to see first hand what could/might possibly go wrong. Considering the dire consequences of a failure, engineers should exercise caution when testing and experimenting with various designs to protect individuals from devastation.