Another time factor is output: proofing and printing. That is, getting your work out of the computer and onto paper and having it satisfy you. It can be time consuming and expensive. ↗
I produce the records. I don't hand over control to some really expensive producer who then talks to the record company and then tries to bend me to their will - for commercial purposes. ↗
It is very expensive to achieve high unreliability. It is not uncommon to increase the cost of an item by a factor of ten for each factor of ten degradation accomplished. ↗
I think some of the special effects in Close Encounters hold up better than the new more expensive special effects is because they were better actually. ↗
London changes because of money. It's real estate. If they can build some offices or expensive apartments they will, it's money that changes everything in a city. ↗