These days, I've been seeing a lot of discussions about sharding and parallel processing. It's lively, for sure, but I still have that old question in my mind: where is the most reliable place to store assets, and can they be withdrawn? Modularization and the DA layer make developers' eyes light up, but for ordinary users (including myself), most of the time it's just "which button do I click"... Anyway, no matter how innovative the narrative, with more bridges, cross-chain solutions, and various encapsulations, the security boundaries become thinner. When something really goes wrong, having an exit strategy is more important than TPS. A friend asked me yesterday, "Is DA similar to storage?" and I could only vaguely say: don't rush to push forward; being able to withdraw easily is better than anything else.