A mathematician, a physicist and a biologist are flying in a air balloon and are lost.
They encounter a man walking below:
The biologist asks him: "do you know, where we are?"
"..." the man looks up and says nothing
The physicist ask him: "can you please tell us, where we are!"
"..." after a while the man says: "yes".
The mathematician remarks, ah, he must be a logician. The others: "how do you know?"
"Well, for once he needed a lot of time to answer. Then his answer is logically correct. And lastly, his answer is completely useless to us."
A mathematician, a physicist and a biologist are flying in a air balloon and are lost.
They encounter a man walking below:
The biologist asks him: "do you know, where we are?"
"..." the man looks up and says nothing
The physicist ask him: "can you please tell us, where we are!"
"..." after a while the man says: "yes".
The mathematician remarks, ah, he must be a logician. The others: "how do you know?"
"Well, for once he needed a lot of time to answer. Then his answer is logically correct. And lastly, his answer is completely useless to us."