TransgenderFacts.org deals purely in facts of which can be proven with tangible evidence, and verified sources. To define the term "fact" is as simple as opening up a dictionary, and looking up a few terms, you are welcome to use a dictionary book, dictionary.com, or Google to define any of these terms, please follow along:
Definition of the term "Fact": something that actually exists; reality; truth.
Definition of the term "Source": a book, statement, person, etc., supplying information.
Definition of the term "Exist": to have actual being; be.
Definition of the term "Reality": the state or quality of being real.
Definition of the term "Truth": a verified or indisputable fact, proposition, principle, or the like.
Definition of the term "Evidence": that which tends to prove or disprove something; ground for belief; proof.
Definition of the term "Tangible": (of an asset) having actual physical existence, as real estate or chattels, and therefore capable of being assigned a value in monetary terms.
All terms defined courtesy of Dictionary.com