We are already 7 billion, and yes, still in the PC era

Today, according to the United Nations, will mark the day when the world population reaches the worrisome figure of 7 billion inhabitants!  "Occupancy by more than 7 billion inhabitants is dangerous and unlawful" should read a big sign visible from outer space. Seriously, this piece of news that cannot pass unnoticed, brings many thoughts and conjectures about the availability of resources. I want just to point to the fact that the PC, that marvelous invention of the 20th century, is here to stay for many centuries to come. Think about this: the automobile, no matter how sophisticated has become and will continue to improve, specially in the energy consumption department, is already part of the tools that mankind uses to function on a daily basis. By the same token, the PC, sort of the second invention of the wheel, will continue to be part of our daily tools for centuries to come. I totally disagree with what some "analysts" wrongly call the "post-PC era" just because the inroads PC tablets (iPad and the like) are making. Undeniably, computing activity has moved from the desktop to the mobile realm, but it does not mean it is a substitute for the personal computer on a desk or even a laptop computer. That would be tantamount to saying that the sandals represent the "post-shoe era" or something to that effect. Nonsense. There is a lot of people that needs to be catered with computers and, no, people won't be productive just tapping on a screen with their fingers. Keyboards, mice and other input devices will continue to be around.