Success belongs to the prepared, failure to the ill-prepared.
If one acts impulsively and randomly, without a well-thought-out plan, chances of failure are high, unless one is incredibly lucky.
Once Link solidified his idea, he began to draft a research plan.
Generally speaking, there are nine common methods of research: field observation, interviews, questionnaires, meetings, seeking expert predictions, sampling, case study, statistical analysis, and document review.
His field trip this afternoon was a form of field observation, providing him with direct, vivid, and reliable first-hand information.
However, what is often observed is the surface phenomena or external relationships of things, which is random and greatly influenced by the subjective factors of the surveyee. Thus, it is not suitable for large sample surveys.