This topic has been well covered by StarkWare and recently Vitalik has a detailed post about layer 3s. So, do I have anything to add? I always thought I did not, which is why I never wrote on the topic - and it’s been a good ~10 months since I first discussed this topic with the StarkWare folks. But today, I think I might be able ramble about it from a different perspective.| polynya.mirror.xyz