A claim is a statement that must be arguable.
There must be at least two sides to a claim. For example, I can claim that I am the best person in the world (not that I am). Others can either:
1) support me, and be on my side
2) argue against my claim, and point out my faults.
hope this helps
Homogeneous=same. heterogeneous=different
Please don't make noise. I <u>am working.</u>