Cranks want to: destroy established scientific theories, but they want to be accepted by the scientific fraternity as well.

Cranks want to:

a. destroy established scientific theories, but they want to be accepted by the scientific fraternity as well.

b. build on established scientific theories and be accepted by the scientific fraternity as well.

c. destroy established scientific theories and be rejected by the scientific community.

d. build on established scientific theories and be accepted by the scientific community.