I think there is a misunderstanding of how a quick build works. People don't just show up on a Friday with no plan and just helter skelter start throwing a building together. THe entire process takes MONTHS. In some cases it took more than a year.
The quick build committee consists of architects, engineers, and licensed trades people for all the major trades. There are also people skilled in project planning and project management. Nothing is left to chance. Everything is meticulously planned to the smallest detail.
What makes the quick build process work is the scheduling of the work. I'll give an example to illustrate. On a "normal" building site the framing carpenters come one day and the electricians come the day after the carpenters are finished to rough in the electric. On a quick build site as soon as the first few walls are up the electricians are coming right behind the carpenters roughing in the electrical. Same with plumbing, exterior siding, etc. This collapses the calender time being spent on the project greatly but the overall time being spent is the same or perhaps slightly more.
The construction does not take 2 days as some have pointed out. A few weeks prior to the quick build weekend the site work and foundation work is completed. A utility closet which will house the electrical breaker box is built so that there will be electricity. The plumbing to the foundation is installed and is working so that there is water.
The quick build weekend is when the structure is completed, we usually shoot to have that done by Sunday afternoon. The weekend actuallly begins on Friday afternoon. Usually the landscaping, parking lot, sidewalks, and other paving were done after the quick build weekend. I was on a few quick builds where all of that was done on Sunday afternoon but that was not typical.
I dont' care what you say or if you like or dislike Jehovah's Witnesses, the quick build process is a marvel of efficiency and professionalism and does accomplish a miracle.
Now, the WTBTS claims that only they can do the quick build process because "Jehovah's spirit" makes it possible. This is not so. Other organizations have done the quick build process. I worked with Habitat for Humanity for a while training them how to do it. The Air Force and the Army do it. I have been in war zones setting up cyber warfare operations centers and we went from having no electricity, no water, no phones, no internet, no communications to having a fully functional cyber warfare operations center up and running in 48 hours. Of course there was a general threatening to shoot us if we didnt' get it working so we had incentive.