Here's why:

* Careful: Observation requires attention to detail and the ability to notice subtle differences.

* Systematic: Observations are often made according to a plan, using specific tools or methods to ensure consistency and accuracy.

* Facts and data: Observations are based on evidence and can be measured or quantified. This distinguishes them from mere opinions or interpretations.

* Natural world: Scientific observations focus on the physical world and its phenomena, aiming to understand its workings.

In essence, observation forms the bedrock of scientific inquiry. It's the starting point for forming hypotheses, testing theories, and building our understanding of the universe.