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Prior to the age of 18, leans firster's job directions:
1. Teachers of {High school or Junior high school or Elementary school or Kindergarten};
2. (Creator&inventor or Expert) professors in {University or College or Research Institute or Library or Bookstore};
3. Scientists from various fields;

Important Notes:
If {mothers and fathers} are {creator&inventor or expert}professors and CEOs.
Their youngest children should be learning first before the age of 18.
So it is better for the youngest children to be professors in order to help {mothers and fathers}'s {successors in science + recruitments}.
The youngest children must be promoted to assistant professor before teaching other children.
Finally, the youngest children will become professors easy and they can help find jobs with their certifications.

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