Every time this topic comes up a rhyme of your comment bubbles to the top and speaking from my own experience growing up in a winery. I can say: yes, it's hard, but no, it's not impossible to take up later in life. Stop assuming he just threw away his notebook and bought a tractor and stop spreading coffee table knowledge. Let people discover things for themselves, or even better, try finding things out for yourself. Because maybe, just maybe, you might discover that our differences are what make us unique and capable of achieving things in our own ways. There is no best practice for everything or everyone.