It's not at all scary. I know some of my ideas are poorly remembered copies of other people's work. Whenever I'm trying to build something, I spend time going through technical journals on the topic to see who invented it first and what they discovered that I haven't figured out yet. It's amazing how hours in the library save you days of beating your head against the wall.

I suggest looking at the past history of IP disputes. Humans have been "slurping up and regurgitating ideas" for a very long time. There are lots of examples of parallel creation, rediscovering old ideas independently, telling an idea to the wrong person, and having them claim credit for it.

- Newton/Leibniz clash over who invented calculus. - Niccolò Tartaglia vs. Gerolamo Cardano clash over the formula used to solve cubic equations. This was also an independent rediscovery, as Scipione del Ferro discovered and published the formula earlier. - There are multiple literary works in print, music, and film that have competing claims. - Meccano versus Erector Set: developed about 20 years apart in England and the United States. Unclear if it's independent invention or copied. US developer Alfred Carlton Gilbert claims he was inspired by steel girder construction of infrastructure.

also https://community.thriveglobal.com/10-famous-inventions-that...