Well, rockets sure, but we have other propulsion technologies that aren't governed by the rocket equation: solar sails, magnetic sails, and laser propulsion all

Well, rockets sure, but we have other propulsion technologies that aren't governed by the rocket equation: solar sails, magnetic sails, and laser propulsion all come to mind. And even with momentum rockets, ion drives, fission rockets, and fusion rockets are massive improvements over the standard chemical rockets we use today.