Look! Up in the sky! It's not a bird, or a plane... or even a flying squirrel. It's Jeb Corliss, who wants to jump from a plane... reach terminal velocity... and land, without a parachute. Yes, it's ...

Without a parafoil you're going to have a hard time clearing cliffs after jumping off the top, or building a wing suit for that matter. The second problem is the progression of testing capabilities.