T-Shaped Skills are Dead - Here's Why You Need to be X-Shaped
For the last decade, T-shaped has been the career advice everyone agreed on, but it doesn't work in the AI Age.
Go deep in one thing.
Stay broad across everything else.
Be the person who can do the work and talk to everyone in the room. Google wanted you. McKinsey wanted you.
Every LinkedIn thought leader told you this was the answer.
Previously I discussed the different frameworks the different shapes and how to progress.
Today I’m going to introduce more about the shift - and why it matters.
What the T-Shape Was Built For
The T-shaped person made perfect sense for the 2010s.
Organisations were becoming more cross-functional. Products required design, engineering, and marketing to actually talk to each other. The specialist who couldn’t collaborate was becoming a liability. The generalist who couldn’t go deep was useless. The T was the elegant solution - depth plus breadth, expert plus communicator.
It worked.
The problem is that the T-shape was built for a world that no longer exists. It was designed for an economy where the horizontal stroke - broad general knowledge, synthesis across disciplines, communication between teams - was rare and valuable.
That world ended the day large language models became widely available.
AI Killed the Horizontal Stroke
Everything the T-shape’s horizontal stroke does, AI does better, faster, and for almost nothing.
The horizontal stroke of the T — the thing that made you more valuable than the pure specialist - has been commoditised. Not partially. Not in some areas. Comprehensively, across almost every knowledge domain, at a speed that has left most organisations and career advisors completely flat-footed.
And the vertical stroke isn’t safe either. The bar for genuine expertise keeps rising. What counted as deep knowledge five years ago is now a prompt away. AI goes deep before it goes wide - the first wave of disruption is hitting exactly the specialised tasks that I and T people are paid for. Document review. Financial modelling. Code generation. Diagnostic reasoning.
So the T-shape is being squeezed from both ends simultaneously.
The horizontal commoditised by AI. The vertical under relentless upward pressure.
This is not a minor adjustment. It is a structural collapse of the dominant career model of the last decade.
Why X-Shaped Is the Answer
The X-shaped person is not simply a better T.
It is something qualitatively different.
Where the T person has depth in one area and breadth across many, the X person sits at the intersection of multiple genuine areas of depth -and generates something from that intersection that could not exist anywhere else.
Not synthesis. Creation.
Not combining what others know. Producing what only they can see.
Darwin was a naturalist, geologist, and economist of ideas simultaneously. Charlie Munger built one of the greatest investment records in history by constructing a latticework of mental models across physics, biology, psychology, and economics — not by knowing more finance than everyone else. Steve Jobs was a technologist who understood human desire better than most psychologists. None of them were T-shaped. All of them were X-shaped.
The X person’s value is not in what they know. It is in where they stand. The specific, unrepeatable intersection of domains, experiences, and perspectives that is uniquely theirs -and that no AI can replicate, because no AI has lived their particular life or made their particular bets.
AI cannot replicate the specific intersection that is you.
Your unique experiences, combined with. your unique knowledge and people skills and relationships.
The Honest Difficulty
Becoming X-shaped is not a weekend project. It requires building genuine depth in a second domain when your first one is already paying well and every institution around you is telling you to go deeper into what you already know. It requires years of discomfort in a new field before it starts to compound. It requires resisting the credential system, which has no category for you, and the job title system, which has no box for what you’re building.
Many people won’t do it.
That is precisely why it’s valuable.
The T-shape was always achievable with a few years of deliberate effort.
The X-shape requires a different mindset, it takes longer, and requires a level of intellectual courage that most career frameworks don’t even acknowledge as a variable.
The courage to be You.
To stand out from everyone else.
And say what only you can say.
And if you can do it you can build a monopoly of one.
A long term competitive advantage that nobody or AI can replicate.
What to Do With This
If you’re T-shaped right now, you may not in immediate danger.
But you are building on a foundation that is actively eroding.
The question worth sitting with is not how to defend the T.
It’s what your X-shape looks like.
What is the second domain you could go genuinely deep in - not surface familiarity, not a few books, but real hard-won expertise?
What intersection does that create with what you already know? What could you see from that position that nobody else can?
That intersection is your career strategy for the next decade. Not the horizontal stroke. Not the depth alone.
The place where only you can stand.
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You can read more about the different shapes and how to progress here
Here’s another article where I go into more detail about how to build a successful career in the AI age
How to build a successful career in the AI age?
TLDR: The labour market has changed. Students need to take education into their own hands. Here is a curriculum and way of thinking about which skills to build that can withstand the evolving job market. There are two tracks: 1) Leverage, and 2) Human Super-Skills. The curriculum should be tailored to each person.