Online reviews are testing tech’s trust revolution

Investigations highlight how the best-resourced tech platform can be manipulated. "Lots of things in life require us to trust others: hiring a babysitter, taking medicine and buying a second-hand car online, to name a few. As in so many other areas, technology is transforming trust-based transactions, but it has also created new problems of its own." John Thornhill reflects on the 'confidence problem' with online reviews.