It takes "wilful blindness" to suggest vaping can be understood completely today. We already know there are unexpected side-effects. Like kids starting to go b

It takes "wilful blindness" to suggest vaping can be understood completely today. We already know there are unexpected side-effects. Like kids starting to go blind, when they start young. I didn't use Alzheimer's as a random example above. There is a known correlation. So... Maybe it isn't combusting plant material. But it is probably causing brain damage in some form or another - and that is precisely the kind of symptom that requires a longitudinal study to understand the impact!