New online formats gutted the newspaper-ad business. Why pore over tiny print looking for a job in the want ads when you can tap a few keywords into monster.com, then click through and apply? Why pay a steep per-character rate for a classified when you can hawk a whole garage full of used stuff on EBay or Craigslist for free?

The ever-growing size of software applications is what makes Moore's Law possible: 'If we hadn't brought your computer to its knees, why would you go out and buy a new one?'

Another random thing I do is the search for extraterrestrial intelligence, or SETI. And you may be familiar with the movie 'Contact,' which sort of popularized that. It turns out there are real people who go out and search for extraterrestrials in a very scientific way.

Within NASA, the shuttle is perhaps the least-groundbreaking project. Recall that Apollo was about creating brand-new technologies that did something unprecedented - putting men on the moon. The shuttle is, by comparison, a relic designed to make going into orbit routine.

The NeXT purchase is too little too late. The Apple of the past was an innovative company that used software and hardware technology together to redefine the way people experienced computing. That Apple is already dead. Very adroit moves might be able to save the brand name. A company with the letters A-P-P-L-E in its name might survive, but it won't be the Apple of yore.

Most estimates of the mortality risk posed by asteroid impacts put it at about the same risk as flying in a commercial airliner. However, you have to remember that this is like the entire human race riding the plane - it is one of the few risks that really could wipe us all out.

We pay for content that we like, and we like the content we pay for. It's a lot more satisfying to pay $7.50 for Steven Spielberg's next epic than it is to watch my home movies for free. Even for me.