"Consider," he said, holding out his hand to let the little ‘bot offer him the driver, "that when this stuff was new, when they were writing multi-million-line software, the unspoken assumption was that in twenty years that software would have been completely replaced by some better, more evolved version." He took the driver and gestured with it toward the hardware on the shelves. "But the manufacturers were surprised to discover that there was this perverse but powerful resistance to spending tens of millions of dollars to replace existing software, let alone hardware, plus retraining possibly thousands of employees. Follow me?" He raised the driver, sighting down its shaft at her.