So if you have an X variable cure, that means that an X-1 variable cure is not enough, right? I&#x27;m not very familiar with the nuances of the scientific process, but I would think that you could still run tests on one variable at a time.<p>Just turn all but one variable &quot;on&quot;, make that your control group. Turn all variables on, that&#x27;s your experiment group. Now repeat the process isolating each variable, determining whether they&#x27;re all in fact necessary for the cure.