Leveraging AI is not trimming fat. It's building new muscle.

Two managers I know both say they "use AI every day". Both are telling the truth.

The first one uses it for email. Meeting notes, summaries, a first draft of the weekly report. He saves hours every week, and he's genuinely happier for it.

The second one does all of that too. But last month, before deciding how to split his growing team, he spent half an hour arguing with AI. He laid out the plan, then asked: "What am I missing? Who gets hurt by this? Argue against it like you're the person who'll lose the most."

It found two problems he hadn't seen. He changed the plan before anyone else ever read it.

Same tool. Same subscription. Very different results.

Co-Pilot and Co-Thinker

I think of these as two modes.

Co-Pilot mode is "AI helps me do my existing work faster." Summarize this, draft that, clean up these notes, automate this boring workflow. It saves real time.

Co-Thinker mode is "AI is my partner for hard decisions." Tough tradeoffs, hiring, a conflict on the team, long-term planning. You're not using AI to type faster. You're using it to see more angles, surface risks, and stress-test your ideas before you act.

You don't have to choose. Use Co-Pilot for routine work. Spend your real thinking time in Co-Thinker mode.

Faster at work anyone can do

Here's the catch with staying in Co-Pilot mode. Everyone around you is learning the same tricks. In a few months, being fast with AI won't set you apart. It'll be normal. You'll just be faster at work anyone can do.

The window is still open. A Capgemini Research Institute survey of 1,500 leaders and managers across 15 countries found that only 15% of them use generative AI every day. The few who go deeper now are building an advantage the rest will have to catch up to.

Co-Thinker mode compounds differently. Better decisions lead to a stronger team, clearer strategy, and more trust from the people above you. That's the kind of edge that grows every month.

Karim Lakhani at Harvard Business School raised a question worth sitting with: AI might not replace people, but people with AI may replace people without it. I'd ask a sharper version. When everyone has AI, what will make you different? My answer: how deeply you think with it.

Start with one decision

You don't need a big plan. This week, pick one real decision or conversation that matters. Give AI the full context. Ask it what you're missing, and to argue the other side. Push back where it's wrong. Then decide.

Notice what changes. Do it again next week.

By month two, you'll feel the difference. By month three, your team will notice.

Muscle, not fat

A lot of companies look at AI and see a way to cut. Fewer hours, fewer people, smaller costs.

I see it differently. Leveraging AI is not trimming fat. It's building new muscle.