The bartender asks “Do all three of you want a beer?”
The first logician says “I don’t know”.
The second logician says “I don’t know.”
The third logician says “Yes.”
The bartender asks “Do all three of you want a beer?”
The first logician says “I don’t know”.
The second logician says “I don’t know.”
The third logician says “Yes.”
This is a good point, but I’ll move the goalposts very slightly and suggest that human brains are capable of wanting something without knowing that they want something. For example, if you say you don’t know whether you want a beer, and then the person next to you orders a beer, then at that moment, you might realize that you really did want a beer before.