You will likely find a lot of these hedging comments in scientific articles, as it’s hard to know and prove something with 100% certainty and it’s an important task for researchers to also indicate the limits of what they’ve discovered. I think ;)
And that is perfectly fair. But what is the “possibly days” based on? Did they see the two whales acting weirdly a day later, but then they didn’t see them four days later? Or is it just based on the hunch of the person who made the observation? Or is it the hunch of the researcher? And if it is a hunch is it based on knowledge of similar reported events in the past? Is it based on the observed state of the adult whale or maybe the state of the carcas?
Why possibly days and not possibly weeks?
> but the fact that the mother stayed for at least some hours appears to be confirmed
Is it confirmed? So that’s the problem. The hours are comming from the same sentence which describes the days. Both by a person who did not whitness the event personally. Your reading is that the second part of the sentence (the days) is speculation, while the first is reporting on observed fact. My reading is that the journalist did a bad job separating the first hand observed facts from the second hand speculation. We just simply won’t know until someone asks the Captain what exactly they have seen and writes it down.
> it’s hard to know and prove something with 100% certainty
But it is not hard to describe what was observed, and clearly separate it from what they think or speculate. Also it is not hard to ask the person who actually did the observing to describe what they have seen, instead of it being described by someone else who was not present.
What we know from the article that Rescue boat Capt. Andrew Mulville whitnessed the two whales behaving unusually. They also took a video of the behaviour. We don’t know how long they whitnessed it, or if there were multiple separate observations or just the one.
And then we have Dr. Olaf Meynecke who was not personaly present and says that “She remained close to the calf, maintaining eye contact and positioning herself next to her calf over several hours and maybe even days.” It is valid to ask what is that based on? Is Dr Meynecke narrating what Capt Mulville seen? Is he saying that based on his knowledge of other times when behaviour like this was observed? Is it just speculation? There is nothing wrong with speculation but it is better be cleanly separated from the description of what was seen.
The reason why this is frustrating is because something interesting (and likely supremely tragic) happened to these whales. But we are hearing about it in a distorted fashion. It is a game of telephone, where the captain seen it, told about it to the researcher, who told the journalist who is telling it to us. It is fundamentally important to keep it clear which parts are comming from the captain’s first hand account and which parts are speculation or elaboration by the researcher.