The theoreticians usually figure out what exactly to look at. The experimentalists figure out how to do it, and then carry it out.
A common joke is that you don't let the theorists anywhere near the apparatus, because they'll break things.
A common joke is that you don't let the theorists anywhere near the apparatus, because they'll break things.
The bridge analogy is spot on, in my opinion. It mirrors my above comment, and I couldn't agree more.