Futurist, author and inventor Ray Kurzweil delivered a keynote speech to 800 attendees at 2016 Tech Leadership Conference in Waterloo, Canada. Ray Kurzweil envisions the future -- by year 2020, 3D printing will transform manufacturing. People will print their own clothing, he predicts. In Asia, builders are making small office buildings using modules made by 3D printers. Inventors created jet engines and cars out of printed parts, Kurzweil says. Impact on a declining manufacturing industry could be catastrophic. Jobs will be lost, manufacturing will turn into an information industry, but there's a silver lining behind industry disruption, he says. The fashion industry will explode with new ideas as people design, make and share clothes using 3D printers. Kurzweil sees manufacturing moving into open source design and production.