ReQall debuted in 2007 as an online-only application, aided by tech luminaries including Microsoft researcher Gordon Bell, usability expert Don Norman and creative thinking guru Edward de Bono.
In his book, Blink: The Power of Thinking Without Thinking, Malcolm Gladwell talks about an art expert who instinctively was able to determine that something was wrong with a particular statue (and its provenance) simply by looking at it, despite the evidence that it was authentic.