Hendo Hoverboards indeed delivers working hoverboards by the end of the year 2015.

Created by orthonormal on 2014-11-01; known on 2016-01-01; judged wrong by orthonormal on 2019-12-31.

• orthonormal estimated 75% on 2014-11-01
• sweeneyrod estimated 30% on 2014-11-02
• orthonormal   judged this prediction wrong on 2019-12-31.
• orthonormal said “I’m not counting hoverboards that can’t hold a person’s weight. They still haven’t done anything besides demo those. (By “delivers” I was referring to the 11 backers who gave $10k for a literal hoverboard; I think they’re still SOL.)” on 2019-12-31