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Curiosity can be different...
Curiosity may be idle: just so; something without a purpose. And can be healthy when it is of practical interest. A healthy curiosity and resulted in many discoveries and achievements.
There are curious people and even animals. We know many examples. They are sad or funny.
Most of all "Why?" we hear from kids. They are the most curious. They are just starting to learn this world.
Forbidden fruit is always sweet. The first victim of curiosity was eve.
Curiosity got the better of. The forbidden Apple ...and the consequences are known to us.