predicting contingency

If (yes) , please name them.

Do you use any model to predict contingency?

yes

If (yes), name it.

If (no), would you use one (if you find an easy and practical one), or you prefer the old way?

yes

Do you have any knowledge of any models (for predicting contingency) even if you don't use it?

yes

If you use one , what is the most common percentage that you used with this model?

How accurate was the model in predicting ddesign errors based on your previous or current projects?

very accurate

a little accurate

not accurate at all