What is difference between new design and re design? Why changes in design are preferred in the early stages rather than later stages? Explain with examples. Problem 7. In the context of machine element design, explain the meaning of failure and failure mode. List three most likely failure modes of a bicycle, and explain why each might be expected. Problem 8. Distinguish between fail safe design and safe life design, and explain the concept of inspectability, upon which they both depend. List several factors that might be used to judge how well a proposed design meets its specified objectives.