I believe your parent was arguing that vaccines facilitate travel and that globalisation is anathema to monoculture. So vaccines indirectly attack the monoculture which you both think is a risk to our civilisation.
I wasn't - but I really like the point you are making. It had never occurred to me that the globalization of of travel is the antitheses of monoculture disease pools - But it's true - the Flu in China last year, quickly becomes a worldwide phenomenon six-nine months later.
That wasn't really my point so much as an attempt to clarify. In all likelihood globalisation at best buys time against the monoculture issue. If and when that hits, with globalisation, it will be commensurately larger than it would have been otherwise.
