Sentence 1: First, we must consider that "Sphere" is less Hard SF and more soft SF, thriller, airport novel and such.

 Sentence 2: "Fins" on real spacecraft are usually for one of two purposes: solar panels or thermal radiators.

From 0 to 5 (0="no meaning overlap" and 5="means the same thing"), how similar are the two sentences?

OPTIONS:
- 0
- 1
- 2
- 3
- 4
- 5
0