When I build a house, I am not anxious because I know the pattern that is used for building with logs or framing. The plans might be different from anything I have ever seen, but the pattern of building is always the same. This book is filled with patterns. Some will be obvious. Others will be much harder to find.
Science is wonderful because it is full of patterns.
We can often predict what will happen from what we know of the past. If an experiment has demonstrate that a rough surface on a tire provides good traction, we can predict that a rough surface on the soles of boots will provide good footing when walking on icy mountains. If an experiment has shown that damp gloves conduct heat away from your hands, we can predict that wet insulation in a house will also cause a great heat loss. As we learn a new job, we learn the patterns of the job. Knowing the patterns of a job makes it much easier.