Astronomy was one of Lili's favourite subjects. She probably would have considered it an occupation if her heart wasn't so set on Potions and Quidditch. But it still meant that she enjoyed the class. It was why there was a big smile on her face as she sat putting the date on her parchment. She had her colour coded system, so that it was easier for her to revise when she got started. But for now, she was going to enjoy the lesson, and colour code to her hearts desire. It was only the start of the year, so she didn't need to do too much studying yet.

She thought to herself for a little, thinking deeply about the question, and listening to others opinions before she put her hand up in the air. She smiled as she answered when it was her turn. "They need to act in a non-biased way. Results, and evidence can't be used, or good, if the person who completed it did so in a biased way"