[lojban] "part of things" fallacy

[Escape Landsome <escaaape@gmail.com>]

Hello,

I read in the "lo no" thread that there was a "part of things"
fallacy.  Imho, this is only due to a "holistic" property of selbri,
that is : an assertion can be valid concerning a sum of things without
the same assertion holding for each things (parts).

For instance, let's say A is a half-car, and B the symmetrical other
half of the car, then A+B is the complete car,

and :

A does not ride
B does not ride
but
A+B rides

There was a point whether rational numbers should be regarded as
(possible) non-null quantitative, I think this should be the case when
the thing that it refers to is parted symmetrically.

For instance, a plane has a plane (no pun intended) of symmetry, so
speaking of a 1/2 plane is valid to me, provided the plane is cut
along its symmetry plane.

Similarly, you would speak of p/n applepie.

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