Brain-Computer Interfaces (BCIs): BCIs create direct communication pathways between brains and external devices. Neuralink and other companies aim to treat paralysis, restore sensory functions, and enhance cognition. Early versions enable paralyzed individuals to control computers with thought. Future iterations may allow seamless mental control of machines or even “mind-uploading.” Ethical issues include privacy, identity, and inequality. Non-invasive methods like EEG are improving, while invasive implants offer higher precision. BCIs could revolutionize medicine and human-computer interaction, blurring the line between biology and technology, but long-term safety and societal impact require careful oversight.
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