Oh but I'm not saying this out of selfishness, the problem for me is not the cancer cure in itself, but who is doing the research..
the experiments on monkeys were questionable in method and nature, and led to death and madness;
the other chip installed in a human has already lost the majority of connection wires;
and not to forget, it's not been specified how the public giving the ideas, would benefit from it. Musk is not exactly known as the phylanthropic kind.