As I've been growing into my Si, I have found myself watching dozens of videos like this and subscribing to channels of this sort. This man doesn't talk (which is itself telling (P=non-verbal)) in any of his videos, but simply records his hobby of using primitive technology to build --from scratch-- absolutely everything but his shorts. As he doesn't ever talk on camera, I don't have an interview but this is what he looks like:
^ We see what appears to be high-Si vultology, and very possibly Ti absent tension. His energy is highly introverted, and he lacks delta qualia.
An important matter here is that John is not doing any of this because he necessarily has to in order to survive. There is logistical agency (Je) involved in what he does but it's not for any logistical cause. Rather, it would appear a waste of time to others from the outside. But there is a deeper fascination in the act of immersing oneself --in a tactile way-- through the evolution of humanity; walking through the path that lead us to where we are now. A quote from an interview with CNBC:
Plant's obsession with subsisting off of nature started at age 11 when he would make small huts by a creek behind his house using only things he could find in the wild. He honed his skills and by age 18 could kindle a fire with sticks and leaves.
"People are naturally wired to be interested in this sort of activity because in the past those who weren't probably died out or didn't pass on their genes," he said. "This hobby also keeps me fairly fit and active, which is good for health."
He essentially embodies one element of the myth of the Earth. Telling the story/narrative of human progress without really even meaning to. I definitely recommend his channel.
Another one who refuses to do interviews or show his face. ^^ I can't really speak to his type, but only really refer here to the subject matter which (regardless of his type) is of the same form and theme. Like with John there is an earthy element at play. But there's also an element of magic, potential, and wonder. This is a theme that matters a lot to the Ne/Si oscillation.
He looks at this hideous bulb but in it his Ne sparks ("can i make this into a dragon egg?"), as Ne has a tendency to evoke that out of things. Moreso, Ne is attracted to novelty that seems to defy reality. Things that seem surreal or fantastical. We see this in Adam Savage a lot, where the projects he takes on often revolve around doing something unexpected, seemingly-physics-defying. This is the source of a lot of Ne's nerdism.
However, in major part this video feels very Si to me, and we see this also in the careful, step-by-step crafting. There is patience, temperance, and pace. This is something you'll notice in strong Si users is that if they really like something, they'll have the most immense patience for it and take it slow to make it just what it needs to be.
There is a phrase he says at the end of this video (14:50+) which I really felt moved by:
Seeing this VIC-20 cleaned up and working again, and playing games brings the same joy to me as seeing rescued animals being cleaned up and sent to new families for a second chance at life. And I suspect this VIC-20 has had a really hard life of work in a grimy industrial environment followed by probably years of being stuffed away, forgotten in some storage shed or something like that. And now it's getting a second chance at life and hopefully will spend the rest of it's life being appreciated by someone.
^ We see a lot in this quote. Some Fi sentiments, but a lot of Si sentiments. Once again, there's this motif of wanting to bring vitality/life back into things that have been decaying. In this way we can understand Si to not be a stagnant process but one that wishes to continually conserve and bring the past with us into the present so that it's not lost forever along with the value that it had before. There's much more to this than what I'm summarizing here and I can't do the function justice.
But here is a vid with him in it:
Ne+Te conscious, so he's got a ton of extroverted energy beneath the Si.
His voice, incidentally, is identical to SiTe ll-l Scott Adams.
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Notice, however, the subtle shift in focus between the (presumably) Si+Fe samples and this one. There is more of a "gadgety" and "techy" vibe to this one. Circuit boards, computers, and all the trivia surrounding different electronics, models and chips-- falls more into the domain of Delta than Alpha. In contrast, the Alphas above seem to resonate more with the earthy element and tie their activities a little closer to the human narrative.
Clint from Lazy Game Reviews is my Si Youtuber of choice. He collects old computer hardware and software and reviews old games. He seems to be a polarized P-Delta, not sure which.
"The reason blood is red is because of its iron content, so we share a connection with the stone."
“Instead of sitting and doing a watercolor, say, of Louder Hills, [sp.?] or the hills around here, these paintings are actually made in a process that is the same way, you know. They’re not representative—they are it. The snow is the place. The pigment is the place. The way they melt is how snow melts. The way the wa—the paper reacts to that melt is how the landscape reacts to the effects of water.”
I haven't looked at much video of him, but from what I've seen I'd guess SiFe. (alt. NiFe?)