Gunpowder was developed into something colorful and exciting for celebrations, long before rocket-assisted arrows were used for war.

Kites were used to raise sentries to spy on opposing forces across the battlefield.

The Polish cavalry was on horseback and managed to hold off the German tank invasion during World War 2 -- for a few seconds.

Devising a net for fishing is pretty simple, a mere extension of interlaced fingers, but who came up with the brilliant idea of fly fishing, and how long did that take?

The U.S. Militaries went from biplane trainers to monoplane in a couple years, and to jets in less than a decade, after decades of prop-jobs.

And now we're coming up with new chipless computers with crystal hard drives.

All so utterly, utterly amazing.

Exciting times, ER. Exciting times.