500
Explain what the main question from the tumor problem is and give the answer. What is the importance of this problem-solving activity?
Q: What type of procedure might be used to destroy the tumor with the rays and at the same time avoid destroying the healthy tissue?
A:Using multiple low, focused levels of rays that destroy the tumor without damaging the skin.
Explanation: People have difficulty in recognizing that one problem can be used to solve another. 30% of the participants solved the problem after hearing the fortress passage and 75% of the participants solved the problem when told to use passage to solve it.