For three months now, a laser printer has displayed a “toner low” prompt.

And for three months, its print quality has remained flawless.

In some situations, “low” prompts necessary, immediate action. In others, it’s an early warning. In still others, “low” is part of the natural cycle of things, and nothing needs to be done.

In a broad sense, choosing between “wait and see” and “take action now” is one of life’s ongoing questions.