Beyond gaining knowledge to better meet specified objectives, managers desperately need information to generate new learning which might move their organizations beyond standard thought processes, presumptions, and approaches. Double-loop learning, which exposes underlying norms, assumptions, and objectives, helps managers to develop innovative and creative responses to organizational problems. Implementation evaluation, often relying on qualitative methods, is especially suited to providing the types of information necessary to foster double-loop learning. Evaluating the implementation of policy tools -- vehicles through which particular decisions become operational -- is an especially fertile field for enhancing organizational learning.