You can. If your project gets big enough, they’ll take legal action. But you can definitely get away with fan projects.
Also with physical objects, you can’t legally do whatever you want either. There’s nothing physically stopping you from taking a piece of wood and carving it into any shape you like. But if you make a big enough project out of it, you may eventually run into legal issues. It could be related to IP like patents, trademarks, or copyright, or it could be something like safety.
It’s ok to make a hamburger for your friends at a cookout, but if you start selling your burgers or distributing them in mass, your government may expect you to follow food safety laws, and you can’t market your burgers as “McDonalds”.
To add to how scary prions are, you can’t really cure them, and when the prions get on a surface, it’s extremely difficult to sanitize that surface in a way that will destroy the prions. A lot of techniques that kill bacteria or even viruses like alcohol won’t work on them. Heat works but you have to make it extremely hot, much hotter than what’s needed to kill something like a bacteria.
It’s naive to think you can’t be influenced into buying things you wouldn’t otherwise.
Also there’s the matter of pricing: they’ll get you to pay as much as possible, either by pushing more expensive versions or by actually changing the price you see on websites like Amazon.
He learned to magic because he thought it would let him fix his hands. Instead he learned the guy who he thought fixed his legs with magic just uses magic to control his non-functional legs.
So he probably could do surgery but he’d probably magically control the needle instead of holding it or something. Maybe.
You can. If your project gets big enough, they’ll take legal action. But you can definitely get away with fan projects.
Also with physical objects, you can’t legally do whatever you want either. There’s nothing physically stopping you from taking a piece of wood and carving it into any shape you like. But if you make a big enough project out of it, you may eventually run into legal issues. It could be related to IP like patents, trademarks, or copyright, or it could be something like safety.
It’s ok to make a hamburger for your friends at a cookout, but if you start selling your burgers or distributing them in mass, your government may expect you to follow food safety laws, and you can’t market your burgers as “McDonalds”.