Automated construction is now a thing: https://m.youtube.com/results?search_query=3d+printed+house
For college textbooks, I'd order them off Amazon a few weeks before the class. Then at the end of the course, I'd sell the newish books and order one that was a few editions out of date for future reference.
For the class I volunteer at I essentially wrote a textbook/workbook, because I couldn't find one exactly like we needed. (As a bonus, we can now just print off a pdf, and give it to new students immediately. At least once this meant that the student had a starting point to self-study at home, because she was unable to come to class).
Re: Thoughts
https://m.youtube.com/results?search_query=3d+printed+house
For college textbooks, I'd order them off Amazon a few weeks before the class. Then at the end of the course, I'd sell the newish books and order one that was a few editions out of date for future reference.
For the class I volunteer at I essentially wrote a textbook/workbook, because I couldn't find one exactly like we needed. (As a bonus, we can now just print off a pdf, and give it to new students immediately. At least once this meant that the student had a starting point to self-study at home, because she was unable to come to class).