Exactly, the essence of farming is actually complying to the harsh physical realities of the world (which doesn't give a single fuck about you.) You have strict deadlines on when to plant and harvest crops, too late and you're fucked. Even worse, even if you adhere to all those deadlines there are always special events like droughts and rainstorms which will definitely make you starve. No wonder why all those early agricultural people made religions to pray for the rain to please drop - you are now at the mercy of Mother Nature.