Sentence examples for why necessary from inspiring English sources

For Leibniz (usually), the PC explains why necessary beings (and truths) are as they are.

Information architecture is the framework that defines the business context what, who, where, and why"—necessary for building successful business intelligence solutions.

This too is an explanation; but it is an answer to a "how possible" question rather than a "why necessary" question.

Why necessary?

Second, why-necessary explanations are better than how-possible explanations in historical sciences such as biology, but why-necessary explanations are only available at the molecular level because structure becomes decoupled from function above this level.

Why were necessary precautions not taken?

Why is this necessary?

Why was TEK necessary?

WHY is it necessary?

Why was it necessary?

Why are governments necessary?