For those who have never tackled the subject of building a house or other structure from a set of blueprints, the ease of knowing just how big or small any component needs to be could come as a relief. Building from plans is the work of knowledgeable professionals on a budget and time schedule, so the ability to read the plans the designer created is a necessity. Those who have that ability are the ones running the show, and they will let every other worker know just what they are supposed to do.
While it might seem too inflexible to constantly refer to a set of plans, it is much more efficient to operate this way. Knowing the size of each wall, where the outlets will go, and even understanding the exact placement of each window can save time and money. The painstaking detail of written plans or blueprints can make a big difference when even just one person is building a structure.