There are several pairs of predicates that can be expressed in a
different way.
1. left - right
2. south - north
3. east - west
4. female - male
5. white - black
6. expensive - cheap
7. healthy - ill
8. good - bad
Some conlangs like Esperanto have only one root for each pair and use
prefixes (e.g. "anti-") to express the second member of the set.
So
left = anti-right
ill = anti-healthy
or
patro - father
patrino - mother (suffix -in- for females)
Ithkuil employs a different approach. It uses two affixes, something
like "plus" and "minus" to determine where on the scale we are present.
so e.g. we have a root for "good/bad" (let it be ROOT1) and for
"left-right" (let it be ROOT2) and mark them with prefixes.
good = plus-ROOT1
bad = minus-ROOT2
right = plus-ROOT1
left = minus-ROOT2
If such policy applied in Lojbanistan left-handed people would
definitely leave the community as "minus" prefix is associated both with
"bad" and "left hand".
Somehow we must choose what is positive and what is negative.
Therefore I state that
*AFFIX POLICY FOR SCALE PREDICATE IN ESPERANTO AND ITHKUIL IS NOT
CULTURALLY NEUTRAL.*
The only way to be culturally neutral is the policy of many natural
languages, i.e. having two separate words for each member of the pair.
In Lojban we have {zunle - pritu}, {bemro - snanu} etc.
Note that even in Esperanto separate root appeared for cheap instead of
just "anti-expensive" which proves that such policy is naturalistic.
(This message appeared after discussing "clockwise" and
"counterclockwise" concepts in a separate topic that in my opinion also
deserve separate words).
Other solutions are culturally non-neutral.
Almost every person belongs to some social minority: left-handed
minority, sexual minorities, ethnic minorities. But together they
constitute MAJORITY of the population.
In other words only the current policy of Lojban is best.
Yes, two separate words instead of one+affix is the cost of such neutrality.
(If you wanna be non-neutral please use {tolpritu} instead of {zunle},
it's absolutely not a problem).