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Could you survive a few days without your smartphone or without being connected to the Internet? How living in a cave no mod cons 40 days? Fifteen people did just that. They took part a project called Deep Time to see how they would react to and cope being totally disconnected the modern world. Scientists from the Human Adaption Institute led the $1.9-million project. They wanted to understand how people would adapt to drastic changes living conditions. They put the volunteers in a cave nearly six weeks. There was no sunlight and the cave dwellers had no contact with the outside world. They had to rely their body clock to know when to wake , go to sleep and eat.

Most of the volunteers said they enjoyed the experience total isolation. Two-thirds expressed a desire to remain underground a while longer order to finish projects they had started. Deep Time's director Christian Clot said the experience would, "test humans' ability to adapt to the loss their frame of reference time and space". He said: "Our future as humans on this planet will evolve. We must learn to better understand how our brains are capable finding new solutions, whatever the situation." One striking observation is that participants lost their sense time. Mr Clot said: "In our heads, we had walked the cave 30 days ago". One team member estimated the time underground to be 23 days.

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