The point I believe she was trying to make, is that there are many activities that have been shown to be more hazardous to both the participant and non-participant that are "accepted" as normal risk associated with life and are not scrutinized.
It is unknown what are the long term effects of the continual exposure to high frequency radio waves used in WiFi, but WiFi hotspots are popping up everywhere, You can't escape it. Studies may be on going, but there is no political agenda to ban the use of WiFi until it's proven safe.
Society has deemed the "convenience" of WiFi is worth any negligible risk if any. Yet, these same people who will walk into a Starbucks with it's WiFi emitters will scream holy hell if someone is caught vaping.
If you look at this article you see about the "dangers of WiFi", you will seem the exact same type of risk analysis performed for WiFi as I did for second hand vape. (Wi Fi is much less powerful than microwave ovens....Microwaves are directed, WiFi is not.... etc)
Wi-Fi: are there any health risks? | Technology | theguardian.com
I find this quote extremely interesting:
When applied to WiFi, this is perfectly fine, yet, if I were to replace the word Wi-Fi with Second Hand Vape, then all of the sudden some people in this very thread expect us to "try to prove a negative". Why are not these people working as hard to ban WiFi until the risks are determined?
Perhaps Diogenes could turn his attention to WiFi from which one can not escape. Even if I don't have WiFi in my home, my neighbors do, and unlike vape, walls and windows don't keep WiFi out of my home.
What this thread has TRIED to show, through mathematics, is that the concentrations of second hand vapor is low enough to be treated the same as WiFi. Safe until deemed otherwise.