In reality there is only one node 0/node 1 etc. so instead of drawing them twice as in the prev. slide this slide draws the extra wire connections.
When looking at certain parts of this network, we can see that some aren't even necessary. Could it be designed to not wire all the crossbars or meshes to cut costs but still maintain a good average routing distance?
So does this slide shows exactly the same network as the previous slide? Or they are different?
They are the same network because in the previous one, the nodes are replicated as explained by IntergalacticPeanutMaker.
@cyl They are the same. This shows more clearly why it's O(1) latency.