And this is…existing research. I’d suggest you modify your tone on these subjects.

So, more articles about how this stuff is useful for blocking electromagnetic radiation - which cosmic rays aren't.

I'm not sure why you're cranky about my tone. I made a simple statement that we do not have existing technology to provide shielding against cosmic rays - and you decided to misinterpret that into being some broad "we can't" statement about space exploration generally. Which is just foolhardy. Shielding against cosmic rays and finding a way to replicate the protective effects of the magnetosphere is one of the big known deficiencies in space exploration technology.

That doesn't mean that we'll never be able to solve it! Just that we're not especially close to solving it. Because cosmic rays aren't electromagnetic radiation. They're a different category of problem, and so the solutions to shielding against electromagnetic radiation you keep linking to (like aerogels) aren't able to be "doped" into doing it.

We very well may one day be able to provide such shielding. For some reason, you keep wanting to convert a point about an existing technological obstacle to long-term spaceflight (which might one day be solved but hasn't been solved yet!) into either a moral or philosophical failing. I'd suggest you modify your tone on these subjects. Or provide a link to existing technology that can actually shield against cosmic rays, rather than other hazards of space, like electromagnetic radiation or solar wind (which is also comprised of particles rather than radiation but travels as much lower velocities than cosmic rays).