There was an intriguing study done (presumably at Duke University) that involved putting common rats in a smooth-sided barrel filled with water to see how long it would take before the helpless rats drowned. Drowning was to be their reality, no matter their effort: the water was too deep for them to rest their feet on the bottom and it was far enough from the top that they couldn’t jump out. The average time before they expired was 17 minutes.
The researchers reviewed their study and drew their conclusions. They decided to repeat the study with a twist.