Multi-Objective-Rl

Liquidity is boring until it vanishes. Most investors notice market makers only when the screen suddenly looks thin: fewer bids, wider spreads, worse execution, and the faint smell of panic priced into every click. A market maker’s job is not glamorous. It quotes buy and sell prices, earns the spread, manages inventory, and tries not to become the proud owner of too much of the wrong asset at the wrong moment. Finance, as usual, rewards the person who stands calmly in the middle of everyone else’s urgency. ...

A supply chain rarely fails because one objective was neglected in a spreadsheet. It fails because the spreadsheet quietly pretended the objective would stay still. Yesterday the priority was margin. Today it is carbon exposure. Tomorrow a route becomes expensive, a supplier becomes unreliable, demand arrives in a pattern that looks suspiciously like a sine wave wearing a hard hat, and the “optimal” plan starts ageing like milk. ...