Finding things out is called research. Crudely speaking there are two types of it:
1: Records research: Reading written documents, listening to sound recordings (e.g. interviews), and viewing still photography or film footage. The communication in records research is one-way only, from the source to the sink.
2: Original/live research: Finding things out for yourself, first-hand. Making observations, conducting experiments, developing theory. Live research is interactive.
Sloppy research is based on personal observations, personal experience, perceived wisdoms, and anecdotes. It produces traditional knowledge.
Rigorous research follows a systematic process, the scientific process. It requires a critical mind and doubt, and it produces scientific knowledge.