An alarm is a warning.

An alarm requires a trigger. A security alarm is triggered by someone. The alarm raised by some animals is triggered by the appearance of a predator.

The advantage of using an alarm is that attention can be directed elsewhere. Therefore alarms can be seen as a form of extended attention or awareness.

The trigger of an alarm reveals expectation. The triggers are only placed where something is expected to happen. Security alarms are placed on the easy entry points: doors and windows.

Alarm triggers are placed where they can give the earliest warning: A smoke alarm is placed high on the wall because smoke from a fire rises. Lookouts are placed away from the group. Scouts move ahead of a group. Animals that warn a group of a predator do so from the edge of the group.

Criteria Alarm

Alarm is raised if things do not appear according to normal criteria. This may link into the principle of homeostasis somehow.

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Categories: attention