The brain excerpt is very odd. One billion neurons? It's more like 100 billion. One trillion synapses? It's more like 400 trillion to 1,000 trillion. That'

The brain excerpt is very odd. One billion neurons? It's more like 100 billion. One trillion synapses? It's more like 400 trillion to 1,000 trillion. That's one trillion to three trillion synapses per cubic centimeter of brain on average (obviously areas have various synaptic density). It appears the cited article is only talking about "memory neurons" and related synapses, but that's extremely unstable ground.