conlangs1-2  Exercise 2: Extending the Toy Scheme
=================================================

  be-  tool       -ka  cutting       -ki  striking

  beka = tool + cutting  = "a cutting tool" (a knife)
  beki = tool + striking = "a striking tool" (a hammer)

An object the scheme cannot place: a spoon.

  A spoon is a tool, but it neither cuts nor strikes. The scheme has no
  ending for "scooping" or "eating with". To place it, the designer must add
  a new ending, and then more for fork, bowl, cup and so on.

What this shows about a priori languages:

  The categories must be decided in advance, and the classification is only
  as good as the designer's picture of the world. Real things overlap and
  cross categories (a spoon is a tool and a vessel), so the tree keeps
  needing new branches. This is one reason the philosophical languages grew
  hard to learn and never became a community's everyday speech.

Your own words will differ. Check that your two new words follow the
head-plus-ending pattern, and that your unplaceable object really does not fit.