20-matter
100 degree proof
matter exists
20 degrees of the 100 degree challenge. Matter exists. Matter is physical substance in general, as distinct from mind and spirit.
If matter didn’t exist there would be no things. No physical world to interact with. The definition of matter says as distinct from energy, however matter and energy are related. As science probes matter for what is underneath it more mysteries are uncovered. Matter exists but what it is is still being discovered.