I sort of hope that I am not easily impressed, but I will say that mankind continually impresses me with its ingenuity to apply knowledge to create things from blank sheets of paper and investigative curiosity. Take, for example, a new self-stabilizing flying object that is based on mathematics discovered at NY University. Click on this link for a video.
Humans first tried to fly by creating flapping wings. Only when they went to fixed wings creating lift with a separate power source did they take off. A completely artificial form of flight even if we know now that bird wings share a airfoil shape and how that works. In the same way, these academics looked at objects and math, not objects in nature. That’s pretty inventive. I am impressed. I’d sort of like to get a tiny motor and make one of those things. 🙂