This is why some researchers argue that suicide capability is an important concept in order to understand which individuals transition from ideation to attempts.
Suicide capability: “In short, because suicide involves the potential for pain, injury and death, and because people are biologically (and arguably evolutionarily) disposed to fear and avoid pain, injury and death, making a suicide attempt requires the capability to overcome these barriers.”
- Practical suicide capability is knowledge of, access to, and expertise with lethal means