Answer:
Observation is a very important part of science. It lets us see the results of an experiment, even if they are not the results we expect.
Step-by-step explanation:
Observation, in a casual sense, can often be a first step to a scientific inquiry, since seeing how the world behaves first can be useful to inform how you construct your scientific theory. The earliest instances of “science” were all about seeing how the world behaved around us and postulating abstract rules which governed this behaviour. We needed observations first to establish any kind of science.