Sharper, or more replaceable?

"The pen is mightier than the sword." Not because the pen is stronger, but because it acts through the mind. That was the deal with every tool before AI: the tool helped, but you still had to think.

AI changes the deal. It can sharpen your judgment, or it can quietly take over the very capacity you think you are improving. And it will not warn you when the shift happens.

This takes 60 seconds. It does not grade you. It shows whether your AI use last week made you sharper, or more replaceable. Most people guess wrong.