Приклад про те, чи роблять тест інженери той самий defect prevention

#testing

Читав я тут статтю PAUL SEAMAN під назвою "TESTING AND PREVENTION – THE ILLUSION". У ній він розмірковує щодо того, чи справді тест інженери можуть запобігти появленню багів - чи ні.

Наведу звідти цікаву аналогію:
"Testing is like this. You’re a passenger in a car, driving down a road that has a variety of speed limit signs. The car has a speedometer which you can see and you glance at it occasionally to check the car’s speed. Does the speedometer reading prevent the driver from driving over the speed limit (which is an issue)? It doesn’t. The speedometer provides you with a signal which you can either ignore or act upon. You might say to the driver “gee the speed limits change a lot around here, we just moved from an 80 km/h zone and into a 60 km/h zone”. The driver can choose to listen to you or ignore you. They might increase speed, decrease speed or stay at the same speed. Changing speed requires a direct input on the accelerator and it is the sole responsibility of the driver to make that adjustment. As a tester you have a focus on the speedometer (and other conditions that are part of the context such as the weather, the road conditions, etc.).

You are providing feedback, perhaps even encouraging slowing the car to a more appropriate speed. You are an observer of what is happening, not the driver who has control and can make changes based on your feedback. You are providing feedback that can be acted upon, but you’re not the person making the adjustments."

А ви як думаєте - чи справді тестувальник працює саме так, як наведено у прикладі, чи ні?
А як же той quality assurance, continuous testing, shift left and right?