A great deal of career advice concerns doing good work. Good work matters and it's insufficient, because opportunities are distributed through channels that operate largely independently of it.
Understanding how those channels work is uncomfortable and useful.
The weak ties finding
Foundational research in this area examined how people had found jobs, and produced a counterintuitive result.
Most had found positions through personal contacts, and disproportionately through weak ties — acquaintances rather than close friends.
The explanation offered was informational. Close contacts move in the same circles and know the same things. Acquaintances bridge to different networks and carry information you wouldn't otherwise encounter.
Subsequent research, including large-scale analysis of professional networking data, has broadly supported the importance of weaker ties for job mobility, with some nuance about which ties matter most in which contexts.
The practical implication is that the useful contacts are frequently not the people you know well.
Why this disadvantages some people
Networks are homophilous — people connect with people similar to themselves. Which means network composition reproduces existing patterns.
If senior positions are held predominantly by one group, and opportunities travel through networks, then people outside those networks receive less information about opportunities, fewer introductions, and less advocacy.
This operates without anybody intending to exclude. Somebody recommending a person they know well, for a role they heard about informally, is behaving normally, and the aggregate effect is systematic.
It also explains why formal equality of opportunity is insufficient. An advertised role with fair selection criteria still advantages people who heard about it early, who had the process explained, and who arrived with an internal advocate.
Sponsorship versus mentorship
A distinction that matters and is frequently blurred.
A mentor gives advice. A sponsor uses their own standing to advocate for you — putting your name forward, defending you in rooms you're not in, allocating you visible work.
Research on career advancement has found sponsorship more strongly associated with progression than mentorship.
Studies have also suggested that women receive mentorship at comparable or higher rates than men while receiving less sponsorship — more advice, less advocacy.
That's a meaningful distinction. Being told how to advance is not the same as somebody spending their credibility to make it happen.
What builds networks
Given that networking as usually described — events, forced introductions — is unpleasant for many people and of limited effectiveness, some alternatives.
Doing visible work with people outside your immediate team. Cross-functional projects build relationships as a byproduct of work, which is more durable than a conversation at an event.
Being useful. Networks operate on reciprocity. Making introductions, sharing information and helping people builds relationships more reliably than asking for things does.
Maintaining contact with people who leave. Former colleagues who move elsewhere become exactly the weak ties that carry information from other networks.
Writing or speaking publicly. Produces inbound contact from people you'd never have met, and it scales in a way individual conversations don't.
Small, specific groups. Communities organised around a shared interest or profession produce more useful connections than general networking, because there's something to talk about.
Asking for what you need
A practical point. Vague requests produce nothing.
"Let me know if you hear of anything" gives somebody no way to help, because they don't know what would be relevant.
"I'm looking for roles in this specific area, at roughly this level, and I'd particularly value an introduction to anybody at these organisations" is actionable.
People generally want to help and are constrained by not knowing how. Making it easy is the main variable.
The organisational side
For anyone in a position to affect this.
Advertise roles rather than filling them through networks. This is more work and produces a wider field.
Track who gets high-visibility assignments, since these determine who becomes known.
Formalise sponsorship — assigning senior people responsibility for advocating for specific individuals, with accountability — rather than leaving it to who someone happens to like.
And notice who's in the room for informal decisions, since those are where a great deal of allocation actually happens.
The uncomfortable conclusion
The meritocratic account of career progression is substantially incomplete.
Good work is necessary and not sufficient, and the sufficient part involves relationships that are unevenly available.
That's worth knowing for two reasons. It suggests where to spend effort, and it corrects an inference people draw when they work hard and don't advance — that the problem was the work. Frequently it wasn't.
Rebuilding after a break
Networks decay, and a period out of work — for caregiving, illness or any other reason — decays them faster than most people expect.
What appears to work is deliberate rather than general. A short list of specific people, contacted individually, with a specific and easy request. Not asking for a job, which is difficult to respond to, but asking for a conversation about what has changed in the field.
People generally respond well to being asked for their view, and considerably less well to open-ended requests for help. Framing the reconnection around their expertise rather than your need is both more comfortable and more effective.