> We're discussing a policy in which all Google employees who come into the office are being forced to vaccinate on the grounds that if any do not, it might be dangerous.

No one made that argument. Even implicitly. Google wouldn't have an exception process if they thought even 1 person unvaccinated is dangerous. And basically it's the same policy many schools have for other vaccinations.

> Your herd immunity numbers are just made up. I saw many estimates last year and none were even close to 90%.

Last July the US GAO said 70 to 90% for most viruses. Their chart implied up to about 86% for COVID-19.[1]

Fauci in December: "We really don’t know what the real number is. I think the real range is somewhere between 70 to 90 percent."[2]

WHO in December: "The proportion of the population that must be vaccinated against COVID-19 to begin inducing herd immunity is not known." But about 95% and 80% for 2 other viruses.[3]

[1] https://www.gao.gov/products/gao-20-646sp

[2] https://www.nytimes.com/2020/12/24/health/herd-immunity-covi...

[3] https://www.who.int/news-room/q-a-detail/herd-immunity-lockd...