12 hours ago, bob7947 said:

I read this a while back.

Here's How Your Watch Can Prove That 2 + 2 Doesn't Equal 4.

 

Wow!  Now, I'm converted to the Modulo world.  In Modulo, I can claim to be 25 years old and everyone has to believe it. 

Adding two persons to a task being performed by two others often doesn’t result in twice the original output. For that matter, adding the second person to the task doesn’t necessarily result in two times the output of that of one person. Sure, 4 persons is twice as many persons as 2 persons but doesn’t necesssary produce four “output units” based on that of the single person. Could be more, could be less. 😄