Yes and no. For example, the Hawthorne study did spark new opposed research movements that have since (obviously) produced a lot of original work. On the other

Yes and no. For example, the Hawthorne study did spark new opposed research movements that have since (obviously) produced a lot of original work. On the other hand, some economists have dug out the data from the Hawthorne studies and concluded that there's a small observational effect. The former point is obviously what I was indicating here.