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The Boltzmann brain gained new relevance around 2002, when some cosmologists started to become concerned that, in many theories about the universe, human brains are vastly more likely to arise from random fluctuations; this leads to the conclusion that, statistically, humans are likely to be wrong about their memories of the past and in fact ...
Ludwig Boltzmann was one of the founders of statistical mechanics and the modern atomic theory of matter. He is remembered for his discovery that the second law of thermodynamics is a statistical law stemming from disorder. He also speculated that the ordered universe is only a small bubble in a larger sea of chaos. The Boltzmann brain is a ...
Boltzmann brain: If the universe we observe resulted from a random thermodynamic fluctuation, it would be vastly more likely to be a simple one than the complex one we observe. The simplest case would be just a brain floating in vacuum, having the thoughts and sensations an ostensible observer has.
The Boltzmann machine can be thought of as a noisy Hopfield network. It is one of the first neural networks to demonstrate learning of latent variables (hidden units). Boltzmann machine learning was at first slow to simulate, but the contrastive divergence algorithm speeds up training for Boltzmann machines and Products of Experts.
A Boltzmann machine, like a Sherrington–Kirkpatrick model, is a network of units with a total "energy" (Hamiltonian) defined for the overall network. Its units produce binary results. Boltzmann machine weights are stochastic. The global energy in a Boltzmann machine is identical in form to that of Hopfield networks and Ising models:
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Robertson made it 3-2 with an unassisted goal at 5:31 of the second period, only 16 seconds after Nylander's first goal tied the game. Nicholas Robertson part of key goals for Toronto in 5-3 win ...
It is more transparent to just avoid such terms. The reworked content is avoiding using these loaded terms altogether and using instead meaningful terms like "Boltzmann brain" and "non-Boltzmann brain" and "other spontaneously formed entities" which are plain and precise terms for the subject matter.