Lately I've been looking into IBC/message passing and these bridge things. To be honest, cross-chain transactions involve more trust than you think: the source chain shouldn't reorganize and roll back your transaction, relayers shouldn't go offline or deliberately delay, the target chain needs to verify the proof according to the rules, and the parameters for light clients shouldn't be secretly changed... Not to mention some bridges also add multi-signature or guardians, claiming trust on the surface but actually betting "they won't all malfunction today." Modularization and the DA layer are currently being hyped up among developers, but it's normal for users to be confused: the chains are getting more fragmented, and responsibility boundaries are becoming blurrier. My skeptical mind just wants to know: who can actually make the message "become real." Anyway, right now I’m drawing trust link diagrams for bridges; I won’t take any action until I finish.