Some of you may have heard of Brooks’s law, which has to do with the time it takes to complete a software project. It’s similar to the general law of diminishing returns in economics. Professor Fred Brooks of the University of North Carolina first proposed the law in 1975; it holds that “adding manpower to a late software project makes it later.” Each additional worker must be trained and adding more workers increases the need for intercommunication between them so that, at some predictable point, the efficacy of adding more members to a task group is cancelled and doing so lengthens, rather than shortens, the schedule.
I didn’t know about Professor Brooks and his law until I started researching this sermon, and I only learned about it because in the early pages of his book he cites the Anglican theologian Dorothy Sayers and her theology of the Trinity. I will come back to Ms. Sayers and her helpful analogy for the Trinity, and later I’ll return to Brooks’s law, but first I want to share with you some of the metaphors for the Trinity, that peculiar understanding of God that we Christians hold and that we focus on each year on this, the first Sunday after the Feast of Pentecost.