#physic # [[Epistemic status]] #shower-thought # Related - [[Readwise/Articles/en.wikipedia.org - Boltzmann Brain - Wikipedia]] - [[Computing/Quantum/Human brain is a Quantum computer]] - [[Biology/Neuroscience/The brain s god module]] - [[Philosophy/Epistemology/Brain dump (shower thought)]] # Boltzmann brain A Boltzmann brain is a hypothetical, self-aware entity that arises due to random fluctuations in a thermodynamic system. Named after Austrian physicist Ludwig Boltzmann, who developed the concept of entropy, the idea is that given enough time and energy fluctuations, a brain will spontaneously emerge. ![[DALL·E 2022-06-23 18.17.34 - A Boltzmann brain, assembled from pure Universe lottery and entropy, by Escher.png]] Random, brute force, combination turn into a brain If you are a boltzmann brain, your memories are false i.e. if you look at your memories and some seem slightly weird, you are a boltzmann brain ![[DALL·E 2022-06-23 18.18.39 - A Boltzmann brain, assembled from pure Universe lottery and entropy, by Escher.png]] >The human brain, it has been said, is the most complexly organised structure in the universe and to appreciate this you just have to look at some numbers. The brain is made up of one hundred billion nerve cells or "neurons" which is the basic structural and functional units of the nervous system. Each neuron makes something like a thousand to ten thousand contacts with other neurons and these points of contact are called synapses where exchange of information occurs. And based on this information, someone has calculated that **the number of possible permutations and combinations of brain activity, in other words the numbers of brain states, exceeds the number of elementary particles in the known universe**. >~ [[Ramachandran]]