If Non Negotiable under Article 3 Why?
1-- "I promise to pay Mary $500 and I'm receiving from Christmas bonus."
2-- "I should pay Lilly $3000 on 6/4/2012."
3-- "I promise to pay Fred $5000 subject to terms of contracted on 2/1/2011."
4-- "I promise to pay Kim $100 within 30days from today's...