[akiselev]

I agree that communicating these concepts is hard, but that characterization of "very rare" and "impossible" only makes it harder.

Pandemics are very rare. Flying unicorns shooting Ebola out of their horns are impossible.

[bobthebuilders]

Nope. Genetic engineering and bioweapons could very make the latter a reality. And that's why you don't try to be pendantic.