We were in a bar and seemed to run out of things to say so one of us suggested to go around and name the most amazing thing ever invented and explain why it was amazing.

So we went around and some said the space shuttle because... some said the fax machine because,.. on even said the dance pole because...

Finally it was Zeek's turn and he said, "Thermos"

Why? we asked.

Because when you put hot stuff in it, it keeps it hot, and when you put cold stuff in it, it keeps it cold.

Why would that be amazing, Zeek? we asked. 

And Zeek said:

But how does it know?