Human nature is a first draft, and the draft is editable.
The position that ageing, disease, cognitive limits and death are engineering problems rather than the terms of existence, and that it is right to solve them. It has a declaration adopted in 1998 and revised in 2009, an organisation, and — unusually for a philosophy — a small number of adherents who have made concrete arrangements to be frozen at death, which is the closest thing it has to a sacrament.
Why it is filed this way
Filed as a philosophy because that is how it operates: a position argued in books and papers, held by people who mostly belong to nothing. It has organisations — Humanity+, the Extropy Institute before it — but no membership that anyone is expected to hold, no rite of entry and no leadership with authority over doctrine. Critics have called it a religion of the engineers, pointing at the structural resemblance between mind uploading and resurrection; transhumanists generally answer that a testable claim is not a creed.