I can't help but wonder why we come to such broad conclusions of fact about the mind, when there are plenty of data points that show there's quite a lot more to

I can't help but wonder why we come to such broad conclusions of fact about the mind, when there are plenty of data points that show there's quite a lot more to the story than "isolation is bad". If I were a serious scientist of the mind for example, I would need to include data points from India and Tibet masters in to my research, who are well known for having studied the mind and have data points showing the opposite. It strikes me as a cultural basis at best to not include those data points, how do we even considered this science really?