In practice, information is usually carried by weak stimuli that must be detected by specialized sensory systems and amplified by energy inputs before they can be functional to the organism or system.
Isalan harkuk eway tan stimuli ibraran s ilzam musnat net s sistem tan n tanafrit tolas imɣarn s tirjiten n enerji data tudabat nasan i axadam i taɣissa meɣ sistem