In this topic, which is a regular in the forum, I have chosen to only believe radeng. Firstly, because he is a RAdioENGineer and secondly, he travels a lot on planes. I take him to be independent of others. Lastly, he always go for the safest option.
One of the problems with humans is that we very easily get lulled into a false sense of security, "It's worked fine for 1 week/year/century - so it'll be fine this time too." Maybe not!