SpaceBanter.com - View Single Post - FALSE PREMISE, TRUE CONCLUSION? (SIMPLER PRESENTATION)

**Dirk Van de moortel[_3_]**

Pentcho Valev wrote in message

Consider the following arguments:

(1) It rains; therefore the soil is wet.

Soil can be wet without rain.
We call this an implication.

(2) X=5; therefore X+3=8.

X+3=8 cannot be without X=5.
We call this an equivalence.

Clearly, in the first case the combination "false premise, true
conclusion" is possible (it does not rain but someone has watered the
garden) whereas in the second it is impossible.

GASP!
After all these dreadful years Pentcho Valev finally seems to be on his
way to grasp the difference between an implication and an equivalence.

Perhaps we must remove this entry from the list of differences
Pentcho Valev fails to understand:
- rates vs. values,
- a personal humorous musing vs. a common dogma,
- children's books vs. inspired essays,
- physicists vs. philosophers,
- coordinate time vs. proper time,
- invariance vs. constancy,
- special relativity vs. general relativity,
- teachers vs. hypnotists,
- laymen vs. zombies,
- a person being right vs. a theory being right,
- students vs. imbeciles,
- bad science vs. bad engineering,
- bad engineering vs. bad cost management,
- honing the foundations of a theory vs. fighting it,
- physics vs. linguistics,
- an article written in 1905 vs. a theory created in 1915,
- understanding a book vs. turning its pages,
- speed vs. relative (aka closing) speed,
- doing algebra vs. randomly writing down symbols,
- real life vs. a Usenet hobby group,
- receiving a detailed reply vs. being ignored,
- everyday concepts vs. scientific concepts in physics,
- the three things that smell like fish,
- inertial vs. non-inertial,
- speed vs. velocity,
- an article vs. a book,
- relativity vs. disguised ether addiction,
- algebra vs. analytic geometry,
- kneeling down vs. bending over,
- local vs. global,
- a sycophant in English vs. in French,
- a relation vs. an equation,
- massive vs. massless particles,
- a Mexican poncho vs. a Sears poncho,
- implication vs. equivalence, == to be removed?
- group velocity vs. phase velocity,
- science vs. religion

36 left.
Way to go!

Dirk Vdm