>>>>This is trumpeted as a good thing but whats the downside.
>>>>Where do we draw the line on how good for everyone something has to be for it to be compulsory for the individual..
>>
>>No trumpeting, just visit that site and compare the effect on the community of 80% vs 95% immunization rate.
>
>Just like any other mathematical model, it's a load of assumptions. Like the vaccine itself being top quality, people being otherwise healthy etc etc.
>
>The nice thing is that numbers don't lie. The distance between the reality and the result they get is the same as the distance between the reality and the initial set of assumptions.

I've read on a book by an economist

He declares that something is like y = f(x) = x * 1/a.

Then he talks many pages about what he can do with that.

After that a tiny paragraph defines:

Initial value [a] on this equation need to be intuitive guessed.

Wouldn't it be easier to guess y directly? I mean I can draw a line with little help.

To that simulation above
Plague Inc. (on Droid or iStuff) makes it much more understandable. And it's even more fun. :)