Keep this life skill for later
Sign in to save
← All life skills

Social skills · a life skill

Advanced Warm Introductions

the bridge between two circles

Some people become the friend who knows someone for everything. It isn't luck, and it isn't a bigger address book. They make introductions on purpose: across circles, with both people's yes, written down, followed up, and with care not to wear out the people everyone wants to meet.

  • Challenging
  • Life-Changing impact
  • Learn it: 30 days
  • A ledger, kept weekly
one introduction, two circles joined
Sam's network over one quarter, with the introductions they made Two circles of friends, teaching on the left and research on the right. Sam, below, knows Ana in the first and Theo in the second. A thick line, the introduction, joins Ana and Theo, each marked yes. A dashed line shows a tie that followed, Ana and Kofi. Above, Lee's request to meet Theo stops short: Theo is getting a rest. Below, Sam's ledger lists Ana to Theo, led somewhere; Rosa to Ana, introduced, check in on 2 November; Lee to Theo, not now, Theo's 3rd ask in 63 days. SAM'S NETWORK, ONE QUARTER TEACHING RESEARCH a tie that followed the introduction Lee a rest for Theo Rosa Ana Jordan Theo Mei Kofi Sam YES YES THE LEDGER Ana → Theo led somewhere Rosa → Ana introduced · check in 2 Nov Lee → Theo not now: Theo's 3rd ask in 63 days

Ana and Theo shared Sam, but not a world. The introduction joined two circles, and a month later Ana asked Sam to meet Kofi, from the same side. Lee's ask waited, because Theo had already said yes twice that quarter.

The method

Make introductions a practice, not a favour.

  1. Keep a ledger, not a memory

    Write down every introduction you're asked for, made, or turned down: who, when, and what came of it. A single line each. Memory keeps the ones that went well.

  2. Look for bridges across circles

    The most useful introductions join people who share you but not a world: the teacher and the researcher, not two researchers who'd meet anyway.

  3. Get both yeses, every time

    However well you know them, ask each side first and privately, with an easy no. Scale makes this matter more, not less.

  4. Check in at two weeks, then three months

    Two weeks after the introduction, ask whether they talked. Three months on, ask what came of it, and tell the person who said yes.

  5. Give busy people a rest

    Before you ask someone for a third time in 90 days, wait. Say no to an ask you can't vouch for, kindly and soon.

    Log it, bridge it, two yeses, check in twice, protect the yes.

Example: Over 12 weeks Sam logged 7 asks and made 5 introductions, and 2 led somewhere. When Lee asked to meet Theo on Monday 5 October, the ledger showed it would be Theo's 3rd ask in 63 days, so Sam asked Lee to come back in the new year. Rosa and Ana were introduced on Monday 19 October, so Sam checks in on Monday 2 November.

The connector's ledger

Log every introduction, and let the ledger tell you what's next.

Add each introduction when someone asks for it. Change its status as it moves, and the ledger works out the check-ins: two weeks after you introduce them, three months after they meet. It also warns you when someone is being asked for a third time in 90 days.

When the answer is no

When you can't vouch for it

When they need a rest

      Kept only in this browser, and never sent anywhere. Write facts, not judgements: it's a log of introductions, not a file on people.

      The research behind it

      The ties that move careers are the in-between ones.

      In 2022 a team from MIT, Harvard, Stanford and LinkedIn published the largest test yet of “the strength of weak ties”. Over five years, LinkedIn's People You May Know feature ran randomized experiments on more than 20 million people, which together created 2 billion new ties and 600,000 new jobs.

      The ties that led to the most job moves were neither the strongest nor the weakest by mutual friends, but the moderately weak ones in between: people who share a few contacts, not a whole circle. Measured by how often two people talked, the weakest ties helped most. Weak ties mattered more in digital industries; in less digital ones, strong ties did.

      The study didn't look at introductions; this step is ours. A warm introduction makes exactly that kind of tie on purpose: between two people who share you, but not a world. The rest rule and the check-in dates on this page are our rules of thumb, not research figures.

      The inverted U shape the study describes, drawn as a schematic A curve rises from weak ties, peaks at moderately weak ties, and falls toward strong ties, measured by mutual friends. It shows the shape the authors describe, not their data. moderately weak ties: the peak weakest moderately weak strongest tie strength, by mutual friends → ↑ jobs passed on
      A schematic of the shape the paper describes, not its data.
      • 20 million+people in the experiments
      • 2 billionnew ties created
      • 600,000new jobs

      Sources: Rajkumar, Saint-Jacques, Bojinov, Brynjolfsson & Aral (2022), Science · PubMed abstract

      The idea

      Why it works.

      Each introduction you make spends a little of two people's goodwill and a little of your judgement. Done one at a time, you can keep that in your head. Done every week, you can't, and the ledger is what keeps the yeses easy: nobody asked too often, nobody left hanging, every yes thanked with what came of it.

      Every line in it is a double opt-in introduction. For the other half of being a connector, bringing people together in a room, see the host mindset.

      When it goes wrong

      Habits that help.

      • Tell the yes what came of it. When Ana's study came through, Sam told Theo. That thanks is what makes the next yes easy.
      • Say no early. A quick “I can't vouch for this one” is kinder than a weak introduction, and it keeps your introductions worth answering.
      • Prune the ledger. Once a line is settled, it's done. Keep the open ones in view, and let the old ones go every few months.

      Keep this going in the app.

      HourLife turns these ideas into a daily system — goals, habits, focus, and reflection in one private place.