### Argument for Fin Collapse Abnormality
P1) If a killer whale with a collapsed dorsal fin is healthy, then collapsed dorsal fins are normal.
(P→Q)
P2)
Collapsed dorsal fins are not normal.
(¬Q)
C)
Therefore, a killer whale with a collapsed dorsal fin is not healthy.
(∴¬P)
[Proof Tree](https://www.umsu.de/trees/#(P~5Q),(~3Q)|=(~3P)) ### Argument for P2
P1) If empirical data shows that most killer whales do not succumb to dorsal fin collapse, then collapsed dorsal fins are not normal.
(¬R→¬Q)
P2)
Empirical data shows that most killer whales do not succumb to dorsal fin collapse.
(¬R)
C)
Therefore, collapsed dorsal fins are not normal.
(∴¬Q)

[Proof Tree](https://www.umsu.de/trees/#(~3R~5~3Q),(~3R)|=(~3Q)) --- # Hashtags #debate #arguments #vegan #orca