The correct answer is False because when the theory of probable cause is not confirmed during troubleshooting, the technician is expected to re-establish a new theory or escalate if necessary. The iterative process of hypothesis testing is crucial, and stubbornly sticking to an unproven theory can lead to wasted time and resources. The question is designed to assess understanding of standard troubleshooting practices, specifically regarding the flexibility required in reassessing and formulating new theories when facing stubborn problems.