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The biggest difference is Polio crippled kids and they were vaccinating kids, whereas COVID mostly kills grandparents and leaves most kids unscathed. Also, now

The biggest difference is Polio crippled kids and they were vaccinating kids, whereas COVID mostly kills grandparents and leaves most kids unscathed. Also, now we have facebook.

ceejayoz 4y ago
One of the un-fun potential answers to the Fermi Paradox is “everyone invents something like Facebook eventually”.
qwytw 4y ago
Also Polio vaccines are much, much more effective and even amongst these groups (i.e. children for Polio and seniors for Covid) Covid is much less dangerous.