What are the implications of a Wahoo ELEMNT ROAM GPS bike computer not displaying power zones correctly, and how can a rider trust the accuracy of their training data when the device is calibrated to the manufacturers specifications, yet still produces inconsistent power zone readings, especially in situations where the rider is relying on precise power output to execute interval workouts or monitor their progress in a training plan, and what methods can be employed to troubleshoot and resolve this issue, considering factors such as device firmware updates, sensor calibration, and potential software glitches, and how can riders differentiate between a device malfunction and user error, given the complexity of modern cycling computers and the nuances of power zone training, and what role do you think the manufacturer plays in ensuring the accuracy and reliability of their devices, particularly when it comes to critical training data, and how can riders hold the manufacturer accountable for any discrepancies or inaccuracies in their devices, and what are the potential consequences of relying on inaccurate power zone data, both in terms of rider safety and training effectiveness, and how can the cycling community work together to establish standardized protocols for testing and verifying the accuracy of GPS bike computers and power meters, and what steps can be taken to prevent similar issues from arising in the future, such as regular firmware updates, device testing, and user education, and how can riders balance the benefits of technology with the potential risks and limitations, particularly in situations where accurate data is critical to their training and performance goals.