"the glass spelled out the correct answer"The "OTHER" side would...

"the glass spelled out the correct answer"
The "OTHER" side would know the answers to many questions based on their collective ability to observe and understand what people do & say.
1 Cor 2:7-8 is a clear indication that "their" knowledge & predictive abilities are limited.
7 But we speak the wisdom of God in a mystery, even the hidden wisdom, which God ordained before the world unto our glory:
8 Which none of the princes of this world (OTHER side) knew: for had they known it, they would not have crucified the Lord of glory.