THE DIVINE TRAGEDY? For Dante, purgatory was the seven-step intermediary between the Hell and Paradise. In the edtech world, it's that stage when new products begin to pick up traction through small pilots, says e-Literate blogger, Phil Hill. Unfortunately, "too many ed tech innovations [are] stuck in purgatory," he observes, since successful pilots (which nearly all startups can claim) rarely translate to mainstream adoption. Taking a page from Everett Rogers' theory of diffusion of innovations, Hill opines that: