On Dec 20, 2:34 pm, "Dirk Van de moortel"
wrote:
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

- rates vs. values,
A rate is a value divided by another reference value

- a personal humorous musing vs. a common dogma,
Common dogma lacks personal humorous musing

- children's books vs. inspired essays,
there are children's books that are good inspired essays

- physicists vs. philosophers,
Physics was born from philosophy

- coordinate time vs. proper time,
time dilation is a common dogma

- invariance vs. constancy,
time dilation is a common dogma
time dilation is a common dogma
time dilation is a common dogma
....

- special relativity vs. general relativity,
Why a child must struggle against his father?

- teachers vs. hypnotists,
If the teacher is a beautiful woman, you will be
hypnotized for sure

- laymen vs. zombies,
laymen can be zombies if they lack personal humorous musing

- a person being right vs. a theory being right,
Theories are neither right nor wrong, they only may be
valid or invalid. A person always has rights.

- students vs. imbeciles,
There are a lot of imbeciles that are no longer students

- bad science vs. bad engineering,
There may be bad engineering with good science,
the reverse is always impossible

- bad engineering vs. bad cost management,
There may be bad engineering with good cost management,
the reverse is always possible

- honing the foundations of a theory vs. fighting it,
Excesive hone becomes a dangerous weapon to fight with

- physics vs. linguistics,
Mathematics is the language of physics,
physics is the language of Nature

- an article written in 1905 vs. a theory created in 1915,
Archaeology and history are always interesting disciplines

- understanding a book vs. turning its pages,
I don't understand this antithesis, so I turn it out,

- speed vs. relative (aka closing) speed,
Do you mean Einstein's addition of speeds? Well, that's the point

- doing algebra vs. randomly writing down symbols,
It is the same thing if nobody understands your algebra

- real life vs. a Usenet hobby group,
Real life is real, Usenet hobby group is Usenet

- receiving a detailed reply vs. being ignored,

- everyday concepts vs. scientific concepts in physics,
Everyday concepts vs. scientific concepts in physics, yeah

- the three things that smell like fish,
Sashimi, Sushi and Sukiyaki

- inertial vs. non-inertial,
non-gravitation vs. gravitation

- speed vs. velocity,
An arrow is a pointed projectile that is shot with a bow.

- an article vs. a book,
A good book always is a good article

- relativity vs. disguised ether addiction,
Really?

- algebra vs. analytic geometry,
I can't see the reason of this issue

- kneeling down vs. bending over,
The former is often practiced, the latter seldom

- local vs. global,
Global warming threatens local cooling

- a sycophant in English vs. in French,
sycophant vs. flagorneur

- a relation vs. an equation,
A=B is an equation, A is friend of B is a relation

- massive vs. massless particles,
Like the tortoise and the hare of the fable,
the former always wins

- a Mexican poncho vs. a Sears poncho,
Do you mean a Cisco poncho?

- implication vs. equivalence, == to be removed?
Often, equivalences have implications

- group velocity vs. phase velocity,
A fish in a river vs. water stream

- science vs. religion
Wars of Religion, again? No more Jihad, please

Seasons Greetings