It's not a dumbass certification. When briefly looked into it last millennium, you'd best be a recent engineering student whose up on some calculus and physics and I don't recall what. But it also seemed geared toward civil engineering, and in many places large construction projects do have to be signed off by a P.E. But if we had to throw away everything designed by regular ME, EE, and SWEs without a PE involved, we'd be in the technological dark ages.