Validation can be expressed by the query "Are you building the right thing?" and verification by "Are you building it right?" Source Wikipedia
Recent systems engineering standards: 15288 Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 00:00: [BRIEF] Why SysML? Why Model-Based Systems Engineering? Slide kind UML Class Diagram
