I understand what you are saying, but not all outward signs are of the devil. Superstitiousness would imply that this person believes in things that are pagan related. That would then imply that God has never used His creation to give man an answer. If one were to believe that- then a great portion of the bible would have to be omitted from teaching. The truth of the matter is, none of us knows what upset this seeking soul. Once we know this, then I believe we can know the motive of the heart and if the answer is of God or the devil. You may want to rest on the quote by Christ: " An evil and adulterous generation seeks a sign, and all they will receive is the sign of Jonah"...
But Christ was speaking of an evil adulterous people in that reply, who seek signs and proof from God to believe.He was not addressing people of faith. Again, the scriptures are full of God giving outward signs , meaning- using His creation to give answer. I believe that is all Brad 47 means , I do not think he is negating the Word. God Bless!