most engineers blindly trust things when another engineer or vendor has signed off/certified on it. There's simply not enough time in the world to go through th

most engineers blindly trust things when another engineer or vendor has signed off/certified on it. There's simply not enough time in the world to go through the certification date for every single part you use in a project. We trust that there has been a testing process that validates that things do what they say they will do. Admittedly when dealing with non-OSS vendors you can sue them if something goes badly wrong.