Simplify the expression. Assume that the variable has positive values. 
Definitions:
Physical Communication
The use of body language, facial expressions, and other non-verbal cues to convey information or express emotions.
Associative Learning
The process by which an individual learns the connection between two stimuli or between a behavior and a consequence.
Operant Conditioning
A learning process through which the strength of a behavior is modified by reinforcement or punishment.
Communication
The act of conveying meanings from one entity or group to another through the use of mutually understood signs, symbols, and semiotic rules.
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