It's a bit older...

...like, think genesis - let light propagate at speed c, pretty dank, then was divided seen from unseen particles.

Spawned a pottery style...

https://live.staticflickr.com/3938/15592719976_acdf4ae363_b.jpg

https://16zypw1pighqx2n3o4ber801-wpengine.netdna-ssl.com/wp-content/uploads/2015/11/PT3220-Smaller-Acoma-Pottery-Jar-Painted-Jar-by-Native-American-Acoma-Pueblo-pottery-artist-Iris-Lucario-335-.jpg

...bit more. Here's the single-slit version...

https://gizmodo.com/did-prehistoric-people-watch-the-stars-through-this-6-0-1782759791
paleo-camera.com/neolithic/

The Zhoubi Suanjing or Aristotle's descriptions can give you some other BC-era sources. It's basically required for photography, which is discoverable from the first moment salt, of all things, encountered silver.

To give you an idea of the time scales, this...

https://en.wikipedia.org/wiki/Acheulean

...is near the beginning of the second majorly agreed-upon period in human history. This, conversely...

https://www.ancient-origins.net/news-history-archaeology/siberian-bones-homo-sapiens-outside-africa-middleeast-021914

...would be about its end.

The events in the first few lines in genesis would have been early in the former (the noted civilization were the "latecomers" in the meeting, though this is likely somewhat observer effect), so about 2 million years ago. The beginning of the first period...

https://www.nature.com/articles/nature14464

...would have been a few years earlier; probably starting before the "out of africa" bits.

You'll note that the first few lines of genesis are also your modern particle physics, etc, ('big bang' inclusive) and that general relativity is just the number 1000 in binary, with the appropriate constants. This... may give you an idea of how far a certain branch of humanity has been delayed by living under occupation, and if they weren't spoon-fed everything, they'd be even farther behind.

So, Young was not the first, by... a couple million years; whenever the first science conference at the meeting was. And... there are multiple testaments to this. It is, however, kind of fun that "young slits" is the defining term for alternate theories of how the universe really works.

Me, I like the side of the tech that you are not being spoon-fed. But... there is active opposition.

If you hear anyone use the phrase "modern humans," I suggest you shoot or strangle them for the good of actual humanity.

It's all gone now unless we hard-shift physical history.