The concern is not with whether there are enough machines to tinker with today or whether there will be that many five years down the line. The concern is with what kind of computing culture is being instilled by the largest mobile computing device manufacturer of the world, which also happens to be one of the most inspiring connoisseurs of interaction design of the last two decades. And where this will lead what we know as "computing" to on the 20-year scale.<p>It's certain that people who already know that hacking and tinkering is what they want to do with computers will find enough suitably priced computers to tinker with in the next 20 years. Nobody is debating that. The concern is over whether the potential-tinkerers of the years beyond will be able to discover hacking through the immanent curiosity of young age when they run into walls of the kind that Apple is surrounding their products with today.