Backprop is not simply about adjusting the weights (as a matter of fact, you can argue that any training method is about adjusting the weights). It's about com

Backprop is not simply about adjusting the weights (as a matter of fact, you can argue that any training method is about adjusting the weights). It's about computing the amount by which you adjust the weight. And unless there's been a major development in neuroscience that I'm not aware of, backprop is not the way the brain does it.