This lecture covers the concepts of verification and validation in the context of the Finite Element Method (FEM). It explains the difference between verification (solving the equations correctly) and validation (solving the correct equations), emphasizing the importance of accuracy assessment and statistical analysis. The instructor provides general advice on model complexity, symmetry usage, and model validity range. Additionally, practical tools like Comsol, Ansys, and Abaqus for FEM simulations are introduced, along with references for further reading on verification and validation in computational mechanics and biomechanics.