"DNNs are nothing more than a huge set of NNs" As in deep neural networks are nothing more than a huge set of shallow neural networks? That's directly contradi

"DNNs are nothing more than a huge set of NNs" As in deep neural networks are nothing more than a huge set of shallow neural networks? That's directly contradicted by tons of evidence. See for example the visualizations in https://distill.pub/2017/feature-visualization/ https://distill.pub/2017/feature-visualization/ Your claim 2 is of course correct, supported by the phenomenon of transfer learning.