Apple Inc.

Whenever chief executives babble about “ecosystems” — as they often do — I picture one of those school biology diagrams of a pond: bacteria at the bottom, algae floating on top, and maybe a stickleback or two darting about below the surface.

John Gapper

Here is a quiz: with which big three auto companies has Google partnered to build a self-driving car? If you guessed Ford, General Motors and Fiat Chrysler, you are wrong. The correct answer is Bosch, Continental and Delphi, three of the industry’s global suppliers.

If “staying active” is the key to a long life, Carl Icahn will probably live for years. At 77, the US investor is on a concerted activist campaign. He has tried (unsuccessfully) to disrupt Michael Dell’s buyout of the computer maker he founded, dined with Apple’s chief executive and pressed him to return cash to shareholders, and last week planted board members – including his son Brett – at Nuance, the Boston technology company that gives Apple’s Siri his/her voice.