The fastest way to ruin a field is to ask it for too much, too soon. Good farmers know the order of operations: understand the ground, fix what's wrong with it, and only then decide what it should grow.
What preparing means
Preparing land is mostly unglamorous. It's drainage and fencing, keeping weeds from taking over, and testing the soil to learn what it actually needs. It's paying the bills on a place before it pays anything back. None of that shows up in a photo, and all of it decides what the land can become.
Choosing the crop last
A field that's been looked after has options. It might suit hay, or vegetables, or orchard trees, or simply being left to rest for a while. The point of doing the groundwork first is that the choice stays open until there's good reason to make it.
That's the approach Harrow takes with the land: soil first, then whatever it's best suited to grow.