When Jobs' own company, NeXt, failed miserably, he returned to Apple as CEO. At the time, several other companies were manufacturing MacOS-compatible computers; Jobs revoked their licenses. He also put the kibosh on a project to develop a PC-compatible version of MacOS, the result of both of these actions being that if you want to use MacOS, you have to buy a Mac.
If it wasn't for Steve Jobs, more people would use MacOS because they wouldn't have to spend lots of money on a computer they can't modify and isn't compatible with lots of peripherals.
If I had a Death Note, I would write 'Steve Jobs - death by diarrhoea' in it.
Originally, in a season in which four full moons occurred, the blue moon was the third of these.
In 1946, an error in the magazine *Sky and Telescope* led to the term referring to the second blue moon in a month.
Today, the phrase 'blue moon' is used to refer to an event that happens quite rarely. Interestingly, by either of the definitions given above, it would ean something that occurs on average every 2.5 years.