Don't you have to put some amount of trust in an idea to even consider verifying? And have even more trust in the idea to perform your experiments in the first

Don't you have to put some amount of trust in an idea to even consider verifying? And have even more trust in the idea to perform your experiments in the first place? Even in medicine, there has to be someone willing to challenge status-quo ideas, or there's nothing to feed into the "long verification process" in the first place. How do you decide when to be that person?