A job search is mostly an allocation problem. You have a finite number of hours each week and several ways to spend them: applying to postings, rewriting your resume, messaging people, going to events. The advice industry has an opinion about each. Very little of it has been tested.
One part has now been tested at a scale that is hard to argue with, and the finding is more specific than the slogan it is usually reduced to.
The experiment
Researchers analyzed a series of large randomized experiments on a professional network's connection recommendation algorithm. The experiments varied how many weak ties appeared in people's networks across more than 20 million people over a five-year period, during which 2 billion new connections and 600,000 new jobs were created (Rajkumar, Saint-Jacques, Bojinov, Brynjolfsson and Aral, Science, 2022).
That design matters. Most claims about networking rest on surveys of people who already found jobs, which cannot separate the contact that helped from the person who was going to succeed anyway. Randomizing who receives which recommendations breaks that circularity.
The result is a curve, not a rule
The relationship between how well you know someone and whether they lead to a job is an inverted U. Weaker ties did increase job mobility, but only up to a point, after which there were diminishing returns to further weakness. Moderately weak ties produced the most mobility. Your closest contacts produced the least.
The reason your strongest ties underperform is not that they are unwilling to help. It is that they know what you know. Close contacts move in the same circles, hear about the same openings, and have already told you about them. A contact is useful in proportion to the information they have that you do not.
The important caveat, which sharpens the advice
A technical comment published in the same journal argues the finding is being described imprecisely. Neal's position is that the valuable property is not weakness itself but bridging: the useful contacts are the ones connecting you to a circle you are not already in, and a strong tie that bridges two separate groups is more valuable than a weak one that does not (Neal, Science, 2022).
That reading is more useful than the original slogan, because weakness is easy to fake and bridging is not. Adding a hundred strangers in your own industry, in your own city, who already know each other, produces very little new information. One genuine connection into a company or field you have no presence in produces a lot.
What this means for a search week
Audit your contacts for reach, not for warmth
The question is not who likes you. It is who knows something you would not otherwise hear. Former colleagues who moved to other companies, people two steps out in an adjacent field, and anyone inside an organization you have no other line into are the ones worth spending a message on.
Stop treating volume as the strategy
Applications through a portal put you in a ranked queue with hundreds of others. A conversation with someone inside the company puts you in a different process. Neither replaces the other, but if your week is entirely portal applications, the evidence suggests the marginal hour is worth more elsewhere.
Make the ask small and specific
Bridging contacts are, by definition, people you do not know well. A request that costs them fifteen minutes gets answered more often than one that asks them to vouch for you. Ask what the team is actually struggling with, or who owns the work you would be doing.
The answers are worth more than an introduction anyway. Knowing what a team is short of tells you which of your own experience to lead with, and knowing who owns the work tells you whose problem you would be solving. Both are things a job posting states badly or not at all, which is part of why the contact route outperforms reading the same description more carefully.
What still has to be true
Networks change who hears about what. They do not change whether you can do the work, and a conversation that goes well produces an interview, not an offer. That is the part still decided by whether you can describe your own experience clearly and answer questions about it out loud.
Track the conversations the same way you track applications, because a search run through people has more moving parts than one run through a portal. Our application tracker exists for that. Keep the underlying material current in the achievement library, since an introduction usually arrives with less warning than a posting does. And rehearse before the conversation you worked to get, using interactive interviews.
For how the pieces fit together, see how it works and the plans page.
The short version
Spend fewer hours on the hundredth application and more on the handful of people who can see into rooms you cannot. Not the people you know best, and not strangers collected in bulk. The ones in between, who bridge you somewhere new.
References
- Rajkumar, K., Saint-Jacques, G., Bojinov, I., Brynjolfsson, E., and Aral, S. (2022). A causal test of the strength of weak ties. Science, 377(6612), 1304 to 1310. pubmed.ncbi.nlm.nih.gov/36107999
- Neal, Z. P. (2022). Sometimes weak ties are just weak. Technical comment, Science, 377(6612). Replication materials: doi.org/10.17605/OSF.IO/7AXCD
Disclosure: This article is published by MyJobsSearch and reflects our analysis and commentary on career strategy and job search tactics. It is for informational purposes only and does not constitute professional career, legal, or financial advice. It does not guarantee employment outcomes, interview offers, or job placements. Career results depend on many factors specific to your situation, industry, and geography. Consult a career coach or qualified professional for personalized guidance.
| Type of contact | Effect on job mobility | Why |
|---|---|---|
| Strongest ties, closest contacts | lowest | They share your information, so they rarely add anything new |
| Moderately weak ties | highest | Enough distance to carry new information, enough connection to act on it |
| The very weakest ties | diminishing returns | Past a point, further weakness stops adding value |
| Bridging ties, per the published comment | the actual mechanism | Access to a circle you are not already in, whether the tie is weak or strong |
A contact is useful in proportion to the information they have that you do not.
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