That's is based on old assumption of neuron function.
Firstly, Kurzweil underestimates the number connections by order of magnitude.
Secondly, dentritic computation changes things. Individual dentrites and the dendritic tree as a whole can do multiple individual computations. logical operations low-pass filtering, coincidence detection, ... One neuronal activation is potentially thousands of operations per neuron.
Single human neuron can be equivalent of thousands of ANN's.
Firstly, Kurzweil underestimates the number connections by order of magnitude.
Secondly, dentritic computation changes things. Individual dentrites and the dendritic tree as a whole can do multiple individual computations. logical operations low-pass filtering, coincidence detection, ... One neuronal activation is potentially thousands of operations per neuron.
Single human neuron can be equivalent of thousands of ANN's.