I just checked the blockchain in the elevator, and the mempool is queuing again... To put it simply, clicking send doesn't mean the transaction will be confirmed immediately; it's more like sorting packages: everyone crowds at the door, and miners/packagers prioritize those willing to pay higher fees, while the rest keep waiting. If it takes too long, it might get stuck as "pending," or you might have to replace it (by increasing the fee and resubmitting) to get it through; otherwise, it's like pressing the elevator door close button repeatedly—useless.

Recently, someone was talking about expectations of interest rate cuts, the dollar index rising and falling together with risk assets, and I don't really want to argue... Anyway, when there's congestion, emotions run high, and everyone rushes for the same ride, the blockchain will truly show you the congestion.

I treat complexity as an enemy: just look at "how crowded the queue is now, and whether I'm willing to wait a little longer for my transaction," that's all for now.