On a white board at work a while back, someone had drawn pictures of a few little things like flowers, houses, people. Next to each was a number, like "3 flowe

On a white board at work a while back, someone had drawn pictures of a few little things like flowers, houses, people. Next to each was a number, like "3 flowers". Then someone wrote, "The sum of all numbers on this board is 15" Then 15 got crossed out and replaced by "30" And so on. You can see where this goes. Anyway reading this, seems that self-enumerating sentences that tell you the sum of all numbers in the sentence aren't possible, unless there is just 1 number, or all zeros, or balanced positive and negative numbers that sum to zero.