Gerontocracy :
A state, society, or group governed by old people. Government based on rule by old people.

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So tell us why you have this general negative attitude towards societies being run by elders?

When did you develop this anti-elder attitude?

Where is the evidence that Zimbabwe's problems have anything to do with the age of Mugabe?

Where is the evidence that Mugabe has shown a break down in mental abilities as a result of his age?

You have so many false projections; it is a shame on you.