Every time a company changes its CEO, many changes always follow. Some of those changes are positive. I expect this to happen at IBM as Ginni Rometty steps down and Arvind Krishna steps up as CEO. Let's take a look at the challenges he faces and what we can expect as investors, customers and workers. I have been following IBM for quite a long time.

The growth of artificial intelligence in recent years has been astounding -- yet AI is still in the very early stages of growth. Where are we today with this new technology, and where are we heading? Which companies are struggling, and why? AI for years has been a staple of science fiction -- from the starship Enterprise's talking computer in Star Trek in the 1960s, to the bionic Steve Austin in The Six Million Dollar Man in the 1970s, to Arnold Schwarzenegger's time-traveling killer robot in the Terminator movies of the 1980s, to give just a few examples. Now AI has moved beyond sci-fi and become real, with all sorts of technologies.

The growth of artificial intelligence in recent years has been astounding -- yet AI is still in the very early stages of growth. Where are we today with this new technology, and where are we heading? Which companies are struggling, and why? AI for years has been a staple of science fiction -- from the starship Enterprise's talking computer in Star Trek in the 1960s, to the bionic Steve Austin in The Six Million Dollar Man in the 1970s, to Arnold Schwarzenegger's time-traveling killer robot in the Terminator movies of the 1980s, to give just a few examples. Now AI has moved beyond sci-fi and become real, with all sorts of technologies.