I don’t know (how could I?) but I think the range of possibilities is wider than what you’ve mentioned. Perhaps it’s related to what they were quoted as saying,

I don’t know (how could I?) but I think the range of possibilities is wider than what you’ve mentioned. Perhaps it’s related to what they were quoted as saying, a problem with a discrepancy between the possible perceived reliability of the information and its actual reliability. I repeat, perhaps. I don’t know.