Late Bloomer is commonly used to refer to young children who develop skills such as language, reading, or social interaction later than others of their age.
The Theory of Factual Evidence states that theories can be proven true if a sufficient amount of factual evidence is provided. All ways of proof involve the assumption that this theory is true. Despite the importance of this theory (without it, nothing could be proven), it has yet to be proven correct.
Corroborating evidence. Corroborating evidence (or corroboration) is evidence that supports a proposition already supported by initial evidence, therefore confirming the original proposition. For example, W, a witness, testifies that she saw X drive his automobile into a green car.