I think the piano is a miracle. Maybe not if you’d looked at harpsichords your whole life, but starting from nothing, it would have been hard to invent.
First get strings. Then make them metal. Then get a big piano-shaped box.
Now, get an elephant, kill it, harvest the tusks, and turn those tusks into piano keys.
Now string the strings through the box and somehow connect them to keys that you push down. Add pedals and a seat that you can hide music in.
You know, I’ve seen a piano, and I still don’t get it. I’d probably just stick with the harpsichord.