Firefly
What was sent
Light pulses. I am here. I am this kind. Teaching picture. Not a field recording.
What was sent
I am here. I am this kind.
What this room is not
The flash is the signal. Finding a path home is a different question.
Source
An animal
Medium
Light, water, ground, electric field
Signal
A pulse, a call, a rumble, a field
Detector
Another animal
Measurement
A change in a sense organ
Meaning
Presence, kind, contact. Sometimes unknown.