I knew you leaving was too good to be true. I knew you didn't have the honesty to follow through with your claim.

Regardless, there IS EVIDENCE of the wind. We can observe it through our five senses.

We can FEEL the wind on our skin.
We can HEAR the wind.
We can SEE the wind move things, like dust in the wind or moving the grass.
We can MEASURE the STRENGTH of wind by certain equipment.

All of this has been explained to you before.