Stability and steadfastness were required at a time when transformation issues meant that selection was never a straightforward process.

Perception seems to most of us to be a rather straightforward process: if we look at a scene the objects in it are spread out before us.

A detailed but straightforward process.

Organic natural entities develop through a straightforward process, relatively simple to comprehend at least in outline.

With lower-flying, slower aircraft, recognizing and tracking an aircraft by its radar blips was a straightforward process.