– hypothesis – a scientific assumption that can explain the observed data.
– If accepted, the hypothesis becomes working, and if it cannot be refuted in the future, then it becomes a theory,
– If new facts do not contradict the theory formulated earlier and on its basis it is possible to predict them, then the theory becomes the rule or the law. The rule has exceptions, and the law is always universal.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.