Large Language Models, AI & the Relativity of Intelligence

What are Large Language Models (LLMs)? How do LLMs work?

Are LLMs just algorithmic programs to guess the next word?

What is intelligence? How do we determine what is consciousness?

Could AI achieve genuine understanding, self-awareness, or consciousness or are they digital 'philosophical' zombies?

What are the ethical and philosophical implications of potential AI sentience and autonomy?