The answer is "No".
At the end, it asks "Can you guess the riddle?"
Your answer, "No, I can not"
Kidengarteners reply "I don't know" or "No, I can't figure it out" because they admit defeat quickly. Harvard grads have to find an answer, and try to find one. Since they never admit that they can not figure out this strange force/object/being what have you, they fail the 6 minute time frame for them to say "No, I can not guess the riddle"
Tricky to figure it out, but its possible.