After a sufficient number of attempts the pattern of weights stabilises and a particular sort of input (say an image of the digit 2, translated into electrons by a digital camera) reliably produces a particular sort of output.
This huge cost improvement helped SanDisk achieve a double-digit gross margin improvement across its product segments which include mobile, digital imaging, and USB sticks among others.
Digital now commands nearly one in five advertising dollars, and forecasts suggest we can expect double digit increases for at least the next couple of years.