The Theory of The Iceberg
This man should be allowed to travel to the Arctic to test his hypothesis. To see how fast they melt, have him stand on an iceberg or large sheet of ice for him to observe firsthand. Allow him to stand outside in the cold for however long it takes until he has enough information to report back.
He is expected to be okay. That’s exactly what it means. Let’s just put him back in 2nd grade for the time being. We’re confident that 2nd graders everywhere can explain to him how ice melts. Before he speaks again, this guy needs to sit down and read a few books.