It could be that the three numbers need only to be in an ascending series. This set does not fit my rule. At this point, you may think that you have discovered my rule the set must consist of any three ascending numbers. You think you have proved your hypothesis. However, this is not true.
Many people attribute a greater degree of certainty to science than is really there.
In science, we can never say for certain what the rules are. Similarly, in psychology, we are never certain about the rules governing human behavior. However, when accurate evidence contradicts our hypothesis, we can be sure that this hypothesis is not true. Then we need to generate a new hypothesis to account for the available information. Once another hypothesis is generated, we need to test it out.