B R A I N
Where we humans normally consider death to be upon us when the heart stops beating, it has been determined that the brain lives up to a full two minutes longer, and is actually getting an extra shot of chemicals that makes it become hyperactive in a way. Perhaps that is why we see our life flash before our eyes when we die.
It is a wonderful organ: around 100 billion neurons, with 100 trillion synapses, and each neuron contains "resonance computers", named microtubules, that can run 10^15 computations per second. Given this new information, it seems more likely that computers will reach that level around 2135 rather than 2035. Sure, that is just an estimate, but it gives us time to align ourselves with the new technology.