What are your thoughts on the unknown? It can either be good or bad but which one is it? And why is the unknown good/bad? (Essay)

The unknown is essential to the human experience as it contributes to humanity's inherent desire to learn and progress as a society. Without the unknown, it is assumed that humanity knows all the secrets of the universe, every rotation of the sun and why it occurs. While this may sound like something beneficial, knowing everything would limit progress in society as it means there is no need to learn. And if a society doesn't learn and continue to evolve, it is stagnant. And a stagnant society will inevitably crumble as the universe is in a constant state of evolution, and humanity must continue to question the unknown; the whys and how's of the world, in order to survive.