2 people are pulling a rope from both ends, Let’s call them Eric and George. In the middle of the rope there is a tension. Totally terrified that the rope might rupture, you run to them and ask how did they find themselves in this situation.
Both of them are saying: “He is responible for the tension in the rope – if HE wouldn’t stop pulling, the rope will forever stay tensed.”
“But, you also feel the tension in your hands, that’s because you are also pulling!” you say.
“Yes,” they are both saying, “but HE is responsible, He started, HE is the problem”.

Seeing it all from above, you KNOW that it is enough that one of them will stop pulling to stop the tension. Truth is, that the first one to do it will be the one to stay on his feet, while the other will probably fall…