How Do I Come To Trust An Electronic Component? Determining what makes a dependable system

Determining what makes a dependable system: Can I trust all of the electronic systems in my vehicle, for example if I’m driving my car at a high speed on the highway or in city traffic at a confusing intersection? Will all of the vehicle’s sensors work as they should and correctly recognize all of the possible dangers around me? In modern vehicles and complex industrial plants today, a number of sensors and many electronic components work to process signals and control commands. Reliable, safe operation of the overall system is possible only if they work flawlessly. With vehicles, safety relates to the physical well-being of passengers as well as other users of the road, while for large industrial plants a safety incident can in principle affect an entire population.
So how is trust in an electronic component gained? What is the meaning of trust in electronics and how can we achieve it?