Which of the following statements is/are true?

[dvberkel]

1. Complex interactions can lead to unintended results
2. Linear interactions can lead to unintended results
3. Complex interactions can lead to intended results but in unintended ways
4. Answers 1 and 3 are correct.

[dvberkel]

The characteristics of linear interactions is that they, as described on page 36

are clear and predictable.

This excludes options 2.

On the other hand, complex interactions are neither clear nor predictable (page 37). The predictable part is addressed in option 1. The clear part is addressed in option 3.

So the answer this question is option 4: both answers 1 and 3 are correct.