“Until then…it’s been theorized there must be a way to permanently kill them, but we don’t know what it is.”
“Until then…it’s been hypothesized there must be a way to permanently kill them, but we don’t know what it is.”
If they had a "theory" they would know how to permanently kill them. A theory is a hypothesis that is know to be factual and capable of accurate predictions of results for a given set of known facts.
