Recently, someone has been talking about "modular chains" again. During the day, I check activity on the chain, and the most intuitive changes for ordinary users are actually just two: First, it's easier to see "Why is this chain lagging again / Why is it suddenly so fast," because execution and block production are no longer on the same chain; second, the presence of bridges and cross-chain solutions is more prominent, moving back and forth is like transferring subway lines, whether it saves time depends on luck and how carefully the security details are handled.

I thought modularity would directly make transaction fees very cheap, but I found that money might be saved in one part, while trouble could grow in another: signing an extra time, an additional hop in the route, and there's more unease... Especially recently with AI Agents and automated trading, it's been quite popular, but I really don't dare hand over private keys/authorizations to "automation." Anyway, I prefer to do it manually first, slow down if needed, and not lend out umbrellas on rainy days.