Yes, Elon Musk expects his brain-chip startup Neuralink to start its first human trial this year. The company received FDA approval for an investigational device exemption (IDE) in May, which allows it to conduct clinical studies on its brain implant technology.

Neuralink's device is a small, coin-sized chip that is surgically implanted into the brain. It contains a network of electrodes that can record and stimulate brain activity. The company has said that it plans to use the device to treat a variety of conditions, including paralysis, blindness, and Alzheimer's disease.

Musk has said that he believes Neuralink's technology could eventually be used to create a "symbiosis" between humans and artificial intelligence. He has also said that he wants to make Neuralink's technology available to the public for free.

The FDA approval is a major milestone for Neuralink, but it is important to note that the company is still in the early stages of development. The first human trial will be small and will focus on safety. It will be several years before Neuralink's technology is available to the general public.

Here are some of the potential benefits and risks of Neuralink's technology:

Benefits:

Neuralink's technology could potentially treat a variety of conditions, including paralysis, blindness, and Alzheimer's disease.
It could also be used to improve cognitive function and enhance human performance.
Neuralink's technology could eventually be used to create a "symbiosis" between humans and artificial intelligence.
 

Risks:

There is a risk of infection or other complications from surgery.
The device could interfere with normal brain function.
There is a risk of misuse of the technology, such as for mind control or surveillance.
Overall, Neuralink's technology has the potential to be a major breakthrough in medicine and technology. However, it is important to be aware of the potential risks before using the technology.