Seeds sown apart

My little one looked at the seedlings I were transplanting. His brow, all ten years old, furrowed. I thought that my instruction to him had been simple: " We have to plant them about 15 centimeters apart".
"But dad", he said, "in nature the seeds wouldn't fall 15 centimeters from each other, would they?"
Impeccable logic here.
Begs the question: if seeds are sown together, or blown together by a chance wind, and sprout, how would they grow? In a bunch, yes, but some would rise above the others, eventually stealing the light, leaving their brothers and sisters in the shadow of their glory. And the more they have shadow, the slower they will grow. Whilst the others, the tall winners, will grow and grow and perhaps even reduce their brothers and sisters to compost. Hmm...
As reality came back into view, I saw that the little source of wisdom had wandered off, aiming for the door that leads to their PC room. That ol' magnet was just too strong...
"Hey", I growled at him. "Back here, lazybones".
"Just because you are Mr. IQ does not mean you don't have work to do".
"Whether nature plants them in a bundle or not, I want them 15 centimeters apart!"
"Now".
He gave me that lazy puppy-eyed smile, knowing that he had been caught out (again).
One of these days he will outwit me without me even realising it, I thought.
-Jonah