Learning can happen anytime, anywhere, with those around us serving as invaluable sources of inspiration, experience, and knowledge. (elearningindustry.com)
Beta tests and pilot programs are invaluable sources of feedback and information for technology companies, especially those that are marketing products to a potentially vast audience of consumers. (goodereader.com)
Ruse's works are accessible and invaluable sources of information on evolutionary history and philosophy They can be of great help to those in the theological and religious communities who wish to take Darwin seriously. (religion-online.org)