The danger of the one man operation has been anticipated and all of the procedures, technique, materials, etc. have been documented. Builds for every speaker have been video taped and "Abbey" is preparing a manual on assembly etc. just in case the "bus" does come along, "someone" can follow up.
But Nathan is only 12 and making speakers is a little out of his league. What is funny is that he is passionate about music, quite a good piano player, but takes excellent sound quality as a given. He doesn't yet understand that what he takes for granted is not all that common. Will he be an engineer, hard to say. he is two grades ahead in math so thats not going to limit him, but he does not seem to have that thirst for "tinkering" that I had at his age. I built a pair of speakers at about his age.
Sometimes the skill of the parent can kill this in the child. My mother-in-law was a great cook, so my wife never bothered to learn. The guy who discocered the prevailing Unified Field Theory had a father who was a well known physicist. He stayed away from physics and got his BS in business. Then in his late 20's he went back to schhool in physics and is now one of the leading theorists in the world. Its funny how we sometimes shun what our parents do.