Anchor: If my actions won't, in the big scheme of things, make a teeny, tiny spot of difference, and the Web as we know it is doomed eventually whatever I do, is it moral of me to download those huge film-and-sound files that I might someday like to see, eventually discarding them without even opening them just to get back the local disk space?
Entailed: If it's not really that big of a deal, can I download it? 
Contradiction: I will always watch and read whatever it is that I download. 
Contradiction: Nudists wear kilts.
Contradiction: A group of kids play in a city park.
Contradiction: Dogs are sleeping
Contradiction: A woman climbs a scaffold.