1.  Ab initio is a subject taken from scratch with no prior knowledge, and this often appeals to mature students.

2.  Attorneys for the two men said they left voluntarily and had no prior knowledge of the accounting fraud.

3.  Explanatory sketches, diagrams, and photographs substitute for equations and help make up for lack of prior knowledge of other sciences.

4.  He denied that he had prior knowledge of the robbery.

5.  In many academic disciplines no prior knowledge is required or assumed.

6.  Mr Mugabe has denied prior knowledge of the land seizures, although he said the government welcomed and supported the occupations.

7.  People are free to choose what they believe, but freedom to choose depends on prior knowledge of the choices.

8.  The police had been excluded from prior knowledge of the arrests, but quickly built up an accurate picture.

9.  Which is to say, we had prior knowledge of those matters.

10.  You do not need any prior knowledge of the subject.