Final answer:
Systematic applications of learning or conditioning are based on the predictability of behaviors under certain conditions and the generalizability of learning principles across different contexts.
Step-by-step explanation:
The two assumptions systematic applications of learning or conditioning principles and techniques are based on are predictability and generalizability. Predictability suggests that, given a specific set of rules and conditions, one can make educated guesses about how people will behave, implying behavior is not entirely random but follows patterns. Generalizability refers to the ability to apply findings from one context to others, meaning the results and techniques used in the learning process are relevant and useful across different situations and for different individuals.