The brain is a piece of soggy bacon that lives in a shell of bone, has its own membrane that is like the gut lining, cleans itself by power-washing itself (and shorting itself out, essentially; REM sleep is basically the side effect of this process), depends on glucose for its special mitochondria[1], and your humanity is literally a thin layer of meat-paint on top of millions of years of evolution...
... that is doing scientific research on itself, and then reading it and understanding the strange symbols on the screen.
[1]: All your organs have unique metabolic signatures, but they, generally, can all run on purely fatty acids; the brain requires about 30-40g of dietary glucose to run optimally, as fatty acids do not cross the BBB quickly enough.
Upper limit of what is considered healthy gluconeogenesis is slightly short of what can be provided. Brain needs ~120g of glucose, you're about 30-40g short of that.
30-40g is almost nothing, could be, say, a cup of frozen berry mix, mixed right into 3/4th a cup of plain real greek yogurt, with some turmeric, ginger, and cinnamon mixed in.
It can also subsist on top of ketone bodies - if fat breakdown is high enough due to a lack of glucose due to fasting or lack of other storage such as glycogen.
... that is doing scientific research on itself, and then reading it and understanding the strange symbols on the screen.
[1]: All your organs have unique metabolic signatures, but they, generally, can all run on purely fatty acids; the brain requires about 30-40g of dietary glucose to run optimally, as fatty acids do not cross the BBB quickly enough.