Comment by metakermit

I like the parallel between optical lens systems and deep learning. I'm also kind of disappointed by the "arcane lore" status hyper-parameters have in different ML domains. I think it would be healthier for the community to make it a habit to explicitly document why a certain topology and layer sizes were selected. It's like providing documentation with your open source project – yes, it would be possible for knowledgable people to use it without it, but much more difficult and beginner unfriendly.