... ambulances save lives, just don't get run over by one.....

You effectively took the words right out of my mouth. These are the kind of words that somehow need to be brought to the attention of blank walls better known as pro-vaxers in support of state-sponsored serial killing at the hands of innoculation-dispensing MDs. If you've got any good advice on how to go about communicating with blank walls, speak up.... even if this will necessitate going down to the level of using finger painting, etcha sketches, phonetics and other goo-goo, ga-ga methods for communicating with infant minds trapped in adult bodies. Be careful. This particular kind of blank wall prefers to be enamored by all manner of deceptions. A classic would be, for instance, a spouse who informs their betrothed blank of the hundreds of dollars they saved in the course of spending thousands of dollars while shopping. Blank walls serving as useful idiots on the front of serial-killing scientists hiding behind titles like "doctor" have a habit of being the type good for having at their finger tips .... all the easier for them to subsequently regurgitate, prefabricated intelligence that goes by calling card titles like "statistics" and "studies" and other tales told in ways that tell of thousands of lives saved short of telling  A) how many lives were expended in the interests of those portrayed as saved?, and  B) how many lives were spared by people who nonetheless figurred out a way to avoid the hazards of these kinds of tales? It doesn't help the cause any that blank walls have been conditioned to accept axioms fabricated especially for their tiny brains....such as, that 180-degree counter views, because they are engrained to be viewed as "negatives", cannot be "proven", ever, so don't bother trying, just stick with understanding things you are designed to be good at.... like being a blank wall.