The Evolution of Butterflies

There's not an obvious link between muscles and actual butterflies. They would never know that they were different animals because they just look exactly the same. And yet it's like to evolve twice. Also, they don't die if you touch them. Don't the wing scales fall off? Some of them do, but it doesn't kill them yet. Isn't it cool to have scales though? Isn't that really weird? That's amazing. Yeah.