They usually don't make the same mistake twice, I will give them that, but I have seen younger mechanical engineers do some pretty silly shit.

I was specifically talking about tanks and stuff like that, not like a standard bracket material selection. Most piping and tanks and stuff is either a team of mechanical and chemical or purely chemical, sometimes with a process or controls engineer thrown in depending on how much money is floating around.

That said, my father tells me all of that stuff used to fall within mechanical engineering, with chemical engineering really being limited to Petro, pharma and agriculture.