Most people think that how their personally play and use "x" gadget and their closed friends do the same, then they can extrapolate globally.
For example:
i have 1 pc + 1 notebook, my brothers have 1 notebook each one, and my fathers have 1 pc. So, i can conclude that :almost every person in the world have a pc or have access to one, and it is not true at all, in fact it is the opposite (no more that 5-8% of the population have access to a computer).
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