Caleb Howe has an article, in light of recent work to get back to the moon, asking what’s happened to all the things Science! has promised us, like jetpacks and robots. Well, Science! is a fickle master that is easily insulted. Each day someone disputes evolution is another day Science! denies us jetpacks and laser rifles. We must give unquestioning loyalty to all the tenets of Science! or it may even punish us with something scientific like an asteroid or a supernova. Or maybe even just a regular nova. Science! also doesn’t like the Harry Potter or Twilight series as they are quite unscientific. Lay those books at its altar (a lab table) and burn them, and Science! may grant you knowledge.
You can have a robot friend and fly around with him in your jetpack, but only if you convince Science! that you are worthy.