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.
Conclusive evidence is evidence that is either unquestionable because it is so clear and convincing or because the law precludes its contradiction. A death certificate is considered conclusive evidence that a person has died.