Evidence of absence
from wikipedia:
When Alice bakes pies, she places them on her window-sill.
There are no pies on her window-sill.
Therefore, Alice has not baked any pies.
Next!
from wikipedia:
When Alice bakes pies, she places them on her window-sill.
There are no pies on her window-sill.
Therefore, Alice has not baked any pies.
Next!