The Nile River left after the spill fertile silt, so the main occupation of the Egyptians is agriculture, and this is the basis of the future civilization.
The ancient Greek historian Herodotus called Egypt the gift of the Nile because almost any ancient civilization can be called the gift of the river on which banks it arose. Only the Nile allowed a person to survive in these places as he was very fertile and rich in silt. Therefore, Herodotus was right.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.