The best answer to their questions is "I don't know" (assuming you don't).
There is no requirement that you have an alternative to their claims to justify your disbelief, just tell them you are not convinced by the evidence.
They are essentially saying that if you can't prove otherwise then they must be right which is an argument from ignorance.
There is no requirement that you have an alternative to their claims to justify your disbelief, just tell them you are not convinced by the evidence.
They are essentially saying that if you can't prove otherwise then they must be right which is an argument from ignorance.