The thing with sync rights is that they are a construct made by US courts, who made the interpretation that syncing music to a video invokes the derivative work

The thing with sync rights is that they are a construct made by US courts, who made the interpretation that syncing music to a video invokes the derivative works part of US copyright law. As such a party need to obtain both a license to reproduce and a license to create a derivative work. US copyright law are split into six categories, one which is reproduction. The other 5 are: preparation of derivative works, distribution (which is not the same as reproduction), public performance, public display, and public performance by means of a digital audio transmission. Copyright owner is given in the law the right to convey each of these exclusive rights separately. Other countries like say France has moral copyright law and property copyright law as cleanly separate laws. Different rules but with similar practical implications. In both cases they are not just fine prints in a license. A license that intend to give recipients full permissions need to include everything. This is why international written copyright licenses are a huge legal problem with no obvious solutions. ---- The human brain is vastly more complex. We don't learn by building up an understanding of the average human face, grouping by clusters of features. At best it would be a extreme oversimplification that ignore 99.9% of what the brain does. The eye neurons (still an oversimplification) sends the visual inputs to multiple parts of the brain, each interpreting and signaling each other, and the outcome of that both influences and changes growth and behavior of those paths and parts. You see a face and it talks to the Amygdala, but also to the frontal cortex, but also the limbic and pre-limbic cortex. It runs a simultaneously a simulation in the hypothalamus to test emotional reaction. We are still not at the hippocampus where long term memories is generally considered to form. A person would be long dead if they had to go through the generic understanding of what a tiger look like, then go through memories that distinguish a lion with a cat, and last go through memories of the significance of a fenced tiger in a zoo in contrast to one in the jungle. Trying to remember a given human face actually invokes a lot of those parts of the brains that activated when we saw them, and a face can also be remember by putting oneself into the emotional state that we were when we met them. One theory about dreaming is that we also rerun those neural pathways, but not all of them at the same time, which then allows for more context. LLMs doesn't even come close to operate like this. It can be good at emulating what seems like learning, but comparing them is like saying that the complex system we call the immune system is like a gun. Both can kill people.