Clearly all of this is motivated by fear of the institutionalized tort machine: trial lawyers.
Get used to way, way, way overkill whenever and wherever these boys show up.
The double ground is a 'belt and suspenders' legal defense. It is not motivated by technical concerns. It is linked to hospitals, etc. because of their propensity to be on the receiving end of killer lawsuits. And they are on the end of these suits because they can pass on their embedded insurance expenses to all of society. That is what the socialization of medicine entails.
You should wire all such establishments with creative lawsuits in mind.
Stop thinking rationally.
Get paranoid.
