>> what panic would it cause if the scientists say "We don't know at this point <<
this is the crux of message management; panicing people are desparate for return of predictability, anyone who provides that will have happy customers for a while.
the idea that the information in raw form that the professionals use is somehow not of public utility needs to go away. this is part one of a double punch the next being the discovery that while data was sequestered, the general populus was lied to about it. Not that that IS what is happening here, but getting caught out doing that is beyond discrediting.
its not good policy to build an abberant world view among your population that will culminate in being crushed by reality, this is why people panic in the first place, and the solution seems to be keep cycling that way so that panic is assauged by building another alternate belief that looks comfortable. its like the trope where someone is hiding/slash disposing of the body while having a conversation accross the house designed to prevent someone walking in before its all hidden away.