Today I saw another bunch of "coincidental transfers": A sends some to B, then B sends it back to A two minutes later, with the amount off by a little... It looks like mysticism, but actually it's just routing acting up: first, the anti-fraud risk control from the task platform pushes people to relay addresses, then an aggregator swaps tokens, and finally, to save on gas, they just consolidate the change. When airdrop season arrives, the points system makes the grabbers work like clocking in, and on-chain it’s even more "coincidental."

Is someone laundering?
Most of the time, no, it’s just the path being too convoluted + slippage compensation + collection and merging causing the "appearance" of laundering.

Anyway, whenever I see this, I first translate each hop’s purpose into plain language: swapping tokens, splitting, consolidating, bridging, reflown… If it can be explained clearly, don’t deify it; if it can’t, then criticize. MEV bots and sandwich attacks are more straightforward—they don’t even hide it. That’s all for now.