The beauty of chemistry lies in its ability to explain the unseen.
If you're trying to achieve, there will be roadblocks. I've had them; everybody has had them. But obstacles don't have to stop you. If you run into a wall, don't turn around and give up. Figure out how to climb it, go through it, or work around it.
In agriculture, data is important, but intuition—forged by experience—is irreplaceable.