ABSTRACT
References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .748
Robustness of design is a vast topic – the Current Index to Statistics lists over 700 articles purporting to discuss it – and so we shall rst clarify our restricted interpretation of the term. By robustness of design we shall mean the scenario outlined in the next few paragraphs.