I'd expect science in this field to look more like economics than physics. You're probably not looking at lab results or anything, but at experiments already done "on the field" with controlled variables. Like an economist assessing minimum wage laws might compare employment in two neighbouring states over a period of time.
Certainly not physics - but shouldn't it be more like biology than economics? You can do experiments in biology (and with LLMs), the problem is you can't quite get to a cause-effect. The situation is just so complex. In both cases we are desperate to get an "explanation" that fits in a human brain and makes us feel like we understand, but it's out of reach.