It seems that some people forget where all of the products that they use come from...testing in the labs where they verify that they actually work. But, the biggest problem is people thinking they know better than hundreds of engineers and lots of field tests to work out the bugs. A scientific test is one that is repeatable to you can verify the thing under test. It's not good enough that it works one time, which may be a fluke, it has to work all the time when used as designed. Changing design, changes the possible outcomes, and you're on your own. It might work, it might not. You may spend a huge amount more for something that would have worked just fine done in a different manner. Thing is, often, you'll never know.