What is the greatest in-universe invention of the Trekverse? Warp drive gets you to other worlds. Transporter gets you anywhere on a world, and with mods works as a cure-all, has a range of up to 100 light years (with risk) or can beam you to alternate universes. Replicator feeds you whatever you want to eat or wear or any gizmo you can imagine, forever. Holodeck gives you all your fantasies and if you ask the right thing, even creates life (or a simulation indistinguishable from life) The Spore Drive gets you instantly anywhere in the universe. This galaxy, another galaxy, anywhere. With mods and some danger, gets you to other universes and future times. Or is it something else?