If cats evolve opposable thumbs, they won’;t need us anymore. then we’;re all screwed. i have not one shadow of a doubt that Penny and Bazinga would merrily enslave me (further) if cats took over the world. I have more to say on that, but Bazinga is staring at me and i have to make her breakfast now.
Samarium Cobalt are not cheap, but they are ideal if one needs a rare earth that can hold up to a lot of heat. Samarium Cobalt were in fact the first rare earth magnets to be made using an allow of more than one type of metal.