In my opinion, the best time to carry out verification and validation steps would be consistently, as progress is made in the project. For example, on my capstone project, we are currently testing materials and designs as we develop in order to limit the amount of backtracking and re-developing we have to do when we find a failure. Verification and Validation are parts of the development process in order to display tests done on the device, their results, and what was done differently after knowing that. This is important for both the team working on the device development, and for the FDA. Leaving these steps until late in the process could lead to a major failure causing a huge step backwards in the process. Working to test, verify, and validate every step made in the process as you go, could be more efficient. Can development teams operate like this in industry?