I feel if there is no evidence or proof of something that it does not exist. Unless we all agree upon its existence through evidence.
For example we We SAY that 0 is the middle but it's not necessarily something tangible or physical. It's just something that (we all agree on), like universally 1 inch is 25. 4 mm and it's not going to change until we abandon metric and imperial measurements.
We all need evidence in order to believe in its existence.
When I was a young boy, I had a cousin in her teens who always used to hold me on her lap. And somehow there was an unspoken custom between us, that she
I had shared some of the IEP humour from this site on a yahoo group. Another lady then shared this game. He takes the most commonly used phrases in a meeting