> pretty sure being right allows us to advance more quickly
Definitely not. The exact opposite is much closer to the truth.
The reason why something like this might be true is related to the Confirmation Bias logical fallacy. Quick classic example:
Take the series of numbers: 2,4,6,8
Figure out what the rules for the series are. If you give me a guess, I'll tell you if it is in the series or not.
So you guess 10.
I say yes.
Then you guess 12.
I say yes.
Yippie, you think. I've figured it out. I'll make one more guess to be sure: How about 14?
Yes.
Ok, you say, the rule is all the numbers are even.
Nope. The rule is the numbers are positive integers. Because you never tested a number that didn't fit your rule, you never found out where your rule was wrong. Therefore you never made any progress in updating your rules.
So, in the case of the Higgs we found out that our rule is right about the information we've learned about the Higgs so far. In which case we can't make our rule any better. If we had instead found out that some of our predictions were wrong, they'd be hard at work updating their model and coming up with ways to test that new model. That's why progress is faster if you find out that you are wrong. The important bit was finding out how you were wrong, and that you were asking the right questions so that the results point you in the right direction.