Hi, guys. You're the company that makes Illustrator so I was quite shocked you got this wrong in Photoshop CS6 strokes.
If I don't close a path, I don't want a stroke drawn between the two open ends, yet it draws one. Fill: sure, I can turn that off.
But stroke: no.
Please consider fixing this. It's really hard to create basic vector elements when the stroke can't handle something so basic.