Love others as you do yourself. We also learned about laser beams. You should never look directly into beams, they could blind you. They can also help you. In addition, we learned about variables.
Variables are things, which can change an experiment.
We also learned about the positive Tate sisters and negative sisters. You should follow the positive Tate sisters. They will lead you on the road you want to take. If you should ever go on the wrong road, just get back on the right track. The clean room has no dust in it.