I have a problem with people who formulate theories with SO MANY guesses and assumptions, each one built upon the next.
(Re-read the article.)
Assumptions and guesses are the beginning of inquiry. Without them, all we would have would be stumbling about attributing everything to "spirits" or "humours" without the first attempt to explain them. We would simply be saying, "it just is".
As for your exhortation to "re-read the article", please do not talk down to me. I read the article several times, and I am quite clear on the implications of the wording that was used. If I have no ironclad evidence of what happened, I will form a hypothesis and attempt to prove or disprove it. Either way, I've made progress, as long as I do not assume that I have the final answer.