Final answer:
Yes, there are still people on the planet who are completely cut off from modern societies.
Step-by-step explanation:
Yes, there are still people on the planet who are completely cut off from modern societies. These people are often referred to as isolated or uncontacted tribes. They live in remote areas and have limited or no contact with the outside world, including modern technology and infrastructure. One example of such a tribe is the Sentinelese people who live on North Sentinel Island in the Andaman Islands of India. They have had very limited contact with outsiders and fiercely resist any attempts at contact or communication.