[Peter sits up on a fence. He's close enough that he can peek at what Fitz is scribbling with a quiet but focused interest, trying to absorb every little bit of what's being written. He sort of wants to see Clint shoot since he's really damn good at it, and Peter's never fired an arrow in his life.]

Never done either before but probably the user interface. [He's never done anything like this before. Sure, he's made his own web shooters, repaired whatever was around, understood biological equations that took his father years to put together, but- This is all kinds of new. He's going to have to learn a lot regardless of which he chooses.] Yeah, getting an arrow to the knee while you're trying to get your own arrows would put a big old damper in training time.

This way nobody gets hurt. ...assuming everybody shoots straight. Also, it's really cool. [to have an automatic system like that.]