If I have a conversation with you and you agree with everything I say, I learn nothing. If we have a conversation and you reveal that my assumptions are wrong,

If I have a conversation with you and you agree with everything I say, I learn nothing. If we have a conversation and you reveal that my assumptions are wrong, I can go back, rethink everything, and come out with a stronger world view. Basically, this experiment didn't tell scientists anything they didn't already know, or didn't prove them wrong--which might lead to newer, more interesting models that reveal more about the universe.