With the power of "Um, Actually," you possess the ability to challenge and reshape the perceived logic and rules of reality itself. By audibly pointing out inconsistencies or flaws in the phenomena you witness, you can temporarily warp the fabric of reality to conform to your alternate explanation. When you express your observation and provide a plausible clarification, the surrounding reality adapts accordingly, aligning with your new understanding.
For instance, if you observe a superhero's power lacking a particular aspect, like a lack of shockwaves produced in their super speed, stating the inconsistency will cause reality to conform to your words, granting them the additional aspect you described. This reality-warping effect lasts for up to one hour and is limited to what you can perceive with your own eyes.