Who Sent The Quran?
But that would be a non academic way of looking at things. It’s a bias essentially. If someone comes and tells you ‘God told me this’ you will not believe it. What allows us to take this at face value
There is still a chance of it. We have the logical possibility of humans testing eg ants and other animals in controlled situations so we can do qiyas
I think your question is very valid but unfortunately the human race is not advanced enough yet to determine that there is intelligent life out there anywhere in the known universe. Not a tiny shred of scientific evidence exists to suggest that aliens exist let alone the ultimate creator of the entire universe. So we have no other choice to rely upon thousands of years of human knowledge that has been claiming that a creator of this universe exits. Even science has not yet come up with absolute evidence to deny the existence of God.