Right, we need to use experiments to figure out that Y is needed in the first place. That’s the “figuring out the structure” part—figuring out what the relevant gears are and how they fit together.
Now, experiments also inherently involve some kind of observation. You make a change, then observe the effect of that change. In some cases, the observation built into the experiment may be enough to figure out the system’s state—that’s what happens in your small doses idea. But this is a very indirect (and likely error-prone) way of figuring out that Y is high in our rat strain.
Right, we need to use experiments to figure out that Y is needed in the first place. That’s the “figuring out the structure” part—figuring out what the relevant gears are and how they fit together.
Now, experiments also inherently involve some kind of observation. You make a change, then observe the effect of that change. In some cases, the observation built into the experiment may be enough to figure out the system’s state—that’s what happens in your small doses idea. But this is a very indirect (and likely error-prone) way of figuring out that Y is high in our rat strain.