I am trying to consider the consequences of widespread use of personal information systems. For example, for a long time I had a dictionary and encyclopedias in the home, but hardly ever consulted them because they weren't available when I was writing a letter in another room or doing homework in another room or chatting with somebody in another city. Now that I do most of my discussion via electronic mail at this terminal, right next to my dictionary and thesaurus, I consult those reference books often in the course of discussions. Electronic mail allows me to stop in the midst of typing or reading for perhaps ten minutes while I look something up, and then get back to the typing or reading without disturbing the other person. Secondly the references are accessible all the time, so I get in the habit of using them.
Redundancy is a healthy thing in research.
By asking the same question again new viewpoints may be discovered. By challenging existing ideas, directly or indirectly, we come upon new truths. I had trouble understanding this the first time, you seemed to contradict yourself, but finally I think I got it, so I'll try to paraphrase it before answering. Well, the first effect will be that indeed. Instead of duplicating old experiments, people will do new ones.