Arguments
The volunteers reading the event chat are already planning around a room that nobody has booked. One organiser describes the venue, the equipment and the schedule as though each detail has been confirmed. You have only seen an unanswered enquiry. Calling the whole story a fabrication could turn a fixable misunderstanding into a fight about honesty. Letting it stand allows more people to rely on it. The immediate distinction is between what has been imagined, requested and confirmed. That distinction can be made publicly without claiming to know why the organiser blurred it.
Pick one and make it yours
2 comebacks to explore.
Open “Chinese original” for the Chinese text and pinyin, or “Why it works” for the meaning and wordplay.
Your opinion is very creative. Especially the part where it has nothing to do with the facts.
When an opinion is inventive but unsupported.
你的观点很有创意，尤其是和事实完全无关这一点。
“Creative” is normally a compliment. Attaching it to the absence of facts turns the praise into the charge, and “especially” makes the mismatch the highlight.
Original source unverified; not attributed to a historical author.
A lofty opinion, sir. Pity it has no ground to stand on.
For an opinion that sounds impressive but ignores practical details.
足下高见，可惜高得有点悬空。
“Lofty” can mean impressive or high above the ground. The double meaning turns praise into criticism. This is modern classical-style wordplay, not an attributed ancient quotation.
Original source unverified; not attributed to a historical author.
Intensity depends on tone, context and who’s listening.
Avoid accusing someone of invention before checking their source; you may be missing a confirmation received outside the shared thread.
Skip the theatrical language in an urgent planning problem; a direct list of unconfirmed details gives people something actionable.
Both of these look like the obvious move. Both hand the conversation back to the other person.
“You’ve always been a liar.”
A disputed detail becomes an allegation about their history. They can demand proof of that broader accusation while the booking question goes unanswered.
“Sounds confirmed enough to me.”
Your endorsement gives other volunteers a second apparent source. If the room is unavailable, they may reasonably say you reinforced the assumption.
Separate confirmed details from an attractive story before other people make commitments that depend on the distinction.
Same problem, different room
Ask what supports the claim and keep your own certainty proportional to the information available to check.
Ask for the missing decision in concrete terms so the first draft has an agreed target to meet.
Ask for one usable example so the room can judge the contribution by what it actually explains.
Huiback