Non-critical thinking appears to be more benifentail to the individual in education.
Sandpaper, a rough texture, granular texture
Chicken with feather or depending on what you cross breed it with
if the earth had not evolved it would be just like every other planet, no life forms, not polluted and pure. it would be clean and there would probably be a few organisms but not how we are now. Global warming would not be there and the plastic in the oceans would also not be there.