So far, that is the most plausible explanation I have gotten. It's strange you know? To see these huge octagonal buildings that are solid brick or metal. That has always nagged at me as to why on earth they would do that. I have had answers ranging from 'they have to build them in x amount of time, and windows greatly slows construction time' to 'so satan can't see into their services'. It's just bizzare.
I met this former elder while at a speaking engagement.
At the end of the program there was a Q&A and this was one of the first questions he was asked! Having grown up in the city, I thought it was for theft reasons.
I learned quite a bit talking to him that day!