6 inputs → 100 hidden neurons ｜ W1 (6, 100)
The hidden layer: six numbers in, a hundred out
Drag the slider to change neuron and watch: the inputs never move — only the weights on those six lines do.
The hidden layer: six numbers in, a hundred out
h = tanh(x @ W1 + b1)
neuron #0
#0the h output of all 100 neurons — bar height is the value, up is positive#99