I've been diving for a long time, but I still can't help but say: the moment you click "Confirm Transaction," it's like shoving a small spaceship into the m**empool** waiting lounge... Usually it's fine, but when congestion hits, everyone lines up. Miners/validators don't have feelings; frankly, they prioritize those who pay higher tips first, while others keep sitting on the cold bench, or even get stuck to the point where you start questioning life; sometimes you'll get cut in line (a transaction replaced by a higher-fee version), and what you end up seeing is: either arriving late or failing after paying a little "toll." When I encounter congestion now, I wait a bit, or simply split the transactions into smaller batches, avoid throwing myself into the whirlpool of congestion all at once. By the way, I think about the recent spiral of inflation + studio spamming in chain games—when the chain gets congested, everyone rushes to get ahead, and the queues only get longer... Anyway, don’t take "on-chain confirmation" for granted; it can also get stuck.