The document discusses where hypotheses come from in scientific research. It begins by defining a hypothesis as a suggested explanation for an observable phenomenon, event, or scientific problem that can be tested. Hypotheses are generated through a variety of methods, including making logical guesses based on prior knowledge, observing patterns in natural phenomena, and testing ideas to find connections between variables. The document emphasizes that hypotheses allow scientists to make predictions that can be empirically tested, with hypotheses that are supported being elevated to theories and those not supported being rejected or refined.