It is dangerous to approach a person who has fallen under the ice. To save him, you need to give him a wide board. Why is it dangerous to approach the hole? Why can you use a board to get out of the water onto the ice?
Polynya has brittle ice, and it does not support the weight of a person. The board increases the person’s contact area with the ice and the pressure on the ice is significantly reduced.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.