You used to be able to do this. Write a clean email. Solve a logic problem. Navigate without GPS. Remember phone numbers. Each of these abilities didn't disappear because you aged — they disappeared because you outsourced them.
The outsourcing cascade
It started with calculators replacing mental math. Then GPS replaced spatial navigation. Then autocomplete replaced spelling. Each outsourcing seemed trivial in isolation. AI accelerates this pattern by orders of magnitude — outsourcing not just specific skills but thinking itself.
Use it or lose it
Cognitive abilities work like muscles. The skills involved in writing, problem-solving, critical thinking, and creativity seem to require regular exercise to maintain. When AI handles these tasks, those abilities may weaken from disuse — just as physical skills fade without practice. We tend to follow the path of least resistance.
The generation gap
For adults, AI erodes existing skills. For children and young people, the risk is different: AI may prevent those skills from developing in the first place. A student who never writes without AI doesn't lose a skill — they never build it. The long-term implications of this are profound and largely unknown.
Not dumber — different
AI isn't making us dumber in a simple sense. It's shifting our cognitive profile: we're becoming better at prompting and evaluating AI output, but worse at generating original thought from scratch. Whether that trade-off is acceptable depends on a future nobody can predict — which is exactly why awareness matters now.