Great discussion so far!

Verification and validation are two critical elements of product development. One informs the elements of a product’s design, while the other looks at those design elements in the hands of users. Although often used synonymously, these alliterative terms sit on opposite sides of the product development life cycle.

Design verification ‘means confirming by examination and provision of objective evidence that specified requirements have been fulfilled
In contrast, design validation ‘means establishing by objective evidence that device specifications conform to user needs and intended use