I've been diving for a long time, but I still can't resist adding a comment: don't just look at "low fees" and "fast arrival" when it comes to cross-chain bridges; the real pitfalls are often in multi-signature and oracles. Multi-signature, simply put, is about whether a small group of people can press the button together; usually nothing happens, but when something goes wrong, it's about "who is signing, whether they've been phished, whether the keys are distributed," these old issues; oracles are even more mysterious—if the price feed/status feed is skewed, the bridge side will treat the error as real.

Some people complain that I take too long to "wait for confirmation" when transferring across chains... I’d rather wait a few more rounds, at least making it harder for on-chain states to be temporarily rewritten or reorganized. I've seen plenty of those weird arbitrage patterns in mempool; the more impatient you are, the easier it is to become a withdrawal machine.

Recently, the group has been arguing over privacy coins, coin mixing, and compliance boundaries until it’s splitting apart—it's actually the same issue as bridges: you think you're discussing principles, but in the end, it all boils down to "who do you trust, who can change the rules, who takes the blame if something goes wrong." Anyway, I now split my bridge transfers into smaller amounts, slow down if needed, I can sleep peacefully.