He had to understand much more than his 8 th grade education provided and had to earn a high school equivalency diploma.
Water is more dense than air.
Whenever a human being dives underwater, pressure on the body intensifies. The deeper the dive, the greater the changes in the inhaled air gases and the potential for problems . But a diver can also sustain fatal injuries from conditions much worse than the bends. But during a deep-dive, nitrogen causes bubbles to form in a body under pressure in the same way as carbon dioxide causes bubbles to form in Coca Cola when it is under pressure. A person who has nitrogen narcosis often acts like a person who is intoxicated.