The scientific approach is one that works with recording a lot of careful observations and then viewing them with skepticism until the data starts to make some sense. However, one person cannot do all this. It needs a team of people finding data and critiquing each other’s findings and theories until some coherent idea precipitates.
This has been the way that the best scientific experiments have been carried out. Also, it is interesting that after many years of such trials and errors, many great and world-changing inventions which were unintended or unforeseen have come about.