The basic principle of identity relation looks so obvious
and easy to understand: 'whatever is true about some object
will stay true by substitution of one name for the other
with the same reference'. For some reasons logicians an
mathematicians can't do without 'substitutio salva veritate'.
When I stated at school that 3+4 don't look
to me as identical with 7 my theacher responded with:'that
is because you are an imbecile Andric'. I learned (much)
later from Frege that different sense(s) (meanings?) may
have the same reference. While the ontological status of
numbers is not (yet) clear it seems reasonable to state
that 3+4 and 7 refer to the same, uh, object.
Even more tricky are the so called 'descriptive names'.
There are to many objects in the universe so we don't
actually have names for them all.
So 'the teacher of Alexander' or 'the designer by Lyra'
will produce true or false identity statment if we name
Aristoteles instead of Plato or J. Carr instead of,say,
Van den Hul.
Now what about: the replica B-60 from Hawaii, the replica
from Taiwan and the replica from Hong Kong? It looks as
if we moved from scarcity to a state of abundance. That
is when we add the new Ikeda B-60. Alas. The guy from
Hawaii (Syntax) is the same guy whom I moved to Tahiti.
'Our' Japanese Walter. I exchnged about 10 emails with him
and know that he made the drawings but the instrument is
made in Taiwan or Hong Kong. I also wrote to the seller of
the replica but got the wrong person answer. I at last got
the right person called Tien who was very kind and helpful.
He promissed to make for me this damn screw from
bronze. He also stated that the same B-60 is sold from
Taiwan as from Hong Kong. So we are talking about one and
the same replica.
Assuming that this one is made on the most modern CNC lathe
I am curious if the 'old-fashioned' made Ikeda B-60 is
better?
and easy to understand: 'whatever is true about some object
will stay true by substitution of one name for the other
with the same reference'. For some reasons logicians an
mathematicians can't do without 'substitutio salva veritate'.
When I stated at school that 3+4 don't look
to me as identical with 7 my theacher responded with:'that
is because you are an imbecile Andric'. I learned (much)
later from Frege that different sense(s) (meanings?) may
have the same reference. While the ontological status of
numbers is not (yet) clear it seems reasonable to state
that 3+4 and 7 refer to the same, uh, object.
Even more tricky are the so called 'descriptive names'.
There are to many objects in the universe so we don't
actually have names for them all.
So 'the teacher of Alexander' or 'the designer by Lyra'
will produce true or false identity statment if we name
Aristoteles instead of Plato or J. Carr instead of,say,
Van den Hul.
Now what about: the replica B-60 from Hawaii, the replica
from Taiwan and the replica from Hong Kong? It looks as
if we moved from scarcity to a state of abundance. That
is when we add the new Ikeda B-60. Alas. The guy from
Hawaii (Syntax) is the same guy whom I moved to Tahiti.
'Our' Japanese Walter. I exchnged about 10 emails with him
and know that he made the drawings but the instrument is
made in Taiwan or Hong Kong. I also wrote to the seller of
the replica but got the wrong person answer. I at last got
the right person called Tien who was very kind and helpful.
He promissed to make for me this damn screw from
bronze. He also stated that the same B-60 is sold from
Taiwan as from Hong Kong. So we are talking about one and
the same replica.
Assuming that this one is made on the most modern CNC lathe
I am curious if the 'old-fashioned' made Ikeda B-60 is
better?