What does influence really mean in a negotiation? For years I couldn't have told you properly. The word felt vague, a catch-all, and a decade of social media influencers hasn't helped. So let me try to pin it down.

You know the moment: the person across the table agrees with you, yet still nothing happens. That gap is what I want to get at, and a small quirk of language is the way in.

Influence bundles together two very different ideas, and it pays to keep them apart. One is working on what someone believes. The other is working on what someone does. The English language happens to have separate words for them: convince and persuade. Convince goes after agreement, the nod, the change of mind. Persuade goes after action.

This isn't pedantry; it decides how negotiations end. Take that moment again. They nod, they follow the logic, but they don't budge. I've convinced them, but I haven't persuaded them. I have their head, not their feet. And a nod is cheap: sometimes it means yes, sometimes it just means the conversation is over. Either way, agreement that doesn't turn into movement isn't a wording problem. It's a deal about to fall apart.

There's a nice wrinkle here that English speakers miss. German often nudges you towards a choice. To describe someone being moved to act, you have to pick a word, and the word frequently carries the verdict: überzeugen, to convince on the merits, or überreden, to talk into it against their reservations. The word already suggests something about how the influence worked. The English persuade keeps its hands clean. It simply tells you that the person acted, leaving the means to the context.

So why does any of this matter across the table?

A convince-first negotiator works the other person's beliefs. Good reasons, solid evidence, all aimed at winning the point, say in a price negotiation. The increase is justified by raw-material index A, up ten per cent this year. The risk is that it quickly turns into a discussion about which index is the right one. After all, it's easy enough to find a raw-material index B that rose by only five per cent over the same period. Now you're two people defending numbers instead of two people looking for a deal.

None of this makes convincing wrong. You need the groundwork. It goes wrong when you get stuck there and miss the moment to turn toward a solution. So: you've got index A, I've got index B. Now what? Agreement isn't action. It's necessary, but it doesn't close the gap. A persuade-first negotiator starts looking for the offer, the trade, the move that actually gets the other side to act. Less time in the head, more time on what a negotiation is for: an outcome both sides will stand behind.

Stuck in convince, you look backward: who's right, and why won't this work? Working towards persuasion, you look forward: what would it take for the other side to be both willing and able to move?

You don't answer that with another slide. Piling on arguments is no cure for a lack of movement, it's the same case, louder. What comes next is the part no framework really captures: working out what actually blocks the other side, and then doing something about it.

Let's not kid ourselves. In the fog of a real negotiation, this can get extremely hard, and distinguishing convince from persuade won't untangle it on its own. But it's where the untangling, and influence, begins.