buyer is supposed to give his supplier 10 days' notice for an order to arrive at the plant.

The Buyer- calls the supplier screaming "the parts are not here and the line is going to go down by tomorrow morning

Supplier - you only gave us 5 days' notice and you know we need 10 days. We are doing all we can to get the parts to you ASAP.

Buyer - that's not good enough. Besides its' your fault we are short because of the high % of defects.

Supplier - wait a minute, we guarantee 99.99% of our parts defect free. You are running at 15% defects and that is because your people on the line are damaging the parts during assembly.

Buyer - NO WAY... I want my parts by 8:00am tomorrow morning