Rearrange the following sentences to form a coherent paragraph: 1. It is a process that involves the systematic and objective investigation of a subject to discover new facts or to confirm existing ones. 2. Research is a foundational pillar of academic and scientific progress. 3. This can be either theoretical, aiming to expand knowledge, or applied, seeking to solve a practical problem. 4. The findings of this investigation are then documented and peer-reviewed to ensure validity and credibility.

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