hahhah dont believe what uu see in the internet 90% is nonsense man people write what they want and of course the reason for that is money... and just be logic uu cant compare humain nature how it builds how it functions with science cause that impossible... lets me give an exemple:
say there is a bird flying in the sky can science bredict where that bird will land(stop flying) i mean the exact position or place and time that birds where it will land like they will say we are 100% that bird will stop at that particular place at that particular time, the answer is no it is beyond their power... so imagine moving a brain wow ...
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and by thet way science even until now they keep learning about brain and how it works and gues what they found :
https://www.sciencenews.org/article/new-3-d-map-illuminates-little-brain-nerve-cells-within-heart
yep your heartt got a little brain on it and guess what!! we already knew that since 1400 years ago.. anyway