Conclusion might be - gardening is Like playing on casino called stock market where falsely called free marked is actually well rigged game.
With the difference that in stock market you can lost your shirt but in unsuccessful gardening you will left with some free food.
Wondering what the hedge looks like in gardening case. My grandpa told me to diversify growing vegetables. When some vegetable does not have good year other will cover with their yield an the potatoes does not have bad year so potatoes are one possible gardening hedge.