Zombieism refers to a tendency of things to become paralysed and parasitic. When anything ages it becomes less adaptable, less flexible, more ‘stuck in its ways’.
You know the expression: ‘You can’t teach an old dog new tricks’.
That’s partly because the old dog is tired and doesn’t want to learn any new tricks. And it’s partly because he doesn’t need to. Old dogs just lie around. They eat, but they don’t hunt. Their joints are stiff. Their ambitions are few. They’ve figured out how to get the bone without much effort.
Likewise, old people often distrust anything new. They’ve seen that most new things don’t work out very well.
 And they often become parasitic. They eat. But they don’t produce. It’s just natural. Often, old people mimic the grave before crawling into it. They don’t move. They don’t think. They shuffle around… like zombies.
Taken from: http://www.moneyweek.com/about-us/the-moneyweek-team/bill-bonner (The game is rigged)