why need add this layer？

[tensorflowt]

hi！ First of all, thank you very much for your open source code. Then, when I was looking at the code, I found that I didn't understand one sentence. Could you please help me explain it?

output += x ？

Is it okay if I get rid of this line ？

thanks！

[cirosantilli]

Remove it and see what happens to accuracy! I haven't tried myself, but it's simple.

That entry creates a bifurcation in the graph as can be seen on Netron: