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Mercy4
Well i would say awesome but Edward de Bono (i have no idea who he is) said an expert is someone who has succeeded in making decisions.
Sorry if it is confusing.
Hope this helps :)
- - A exert is someone who specializes in a certain thing.
For example:
Gymnastics
or
Math

it can be anything.

People say "im a expert at this" because they believe there very good at it.

Hope this helps! :) «