So the baby had a pet monster. And so nobody but baby could see it. And so a couple of men dropped out of thin air to check and see if the monster was licensed or not. So what's strange about that?
In the future, we may discover new planets; our ships may rocket to new worlds; robots may be smarter than people. But we'll still have slick characters willing and able to turn a fast buck--even though they have to be smarter than Einstein to do it.
A young woman objects to being sedated into placidity, as is the norm in the overcrowded, genetically optimized future.She also refuses to be paired with a somnolent drip of a fellow, who needs medication to act at an even minimal level of energy. Then you've got the young spacer, who believes he has discovered an efficient hyperdrive that could open the stars to humanity. He is told to cool his heels in a dead-end assignment until he discovers the error in his mathematics.
Most useful high explosives, like ammonium nitrate, are enormously violent. once they're triggered. But they will remain seemingly inert when beaten, burned, variously punished--until the particular shock required comes along....