“Here’s a question for you,” Sam smiled. “We talk about potential, that is something we want in every candidate. You have also asked me to be specific in my language. You chided me about using analogies like – potential for growth, higher level thinking, more bandwidth, mental horsepower. Just exactly what are we talking about? And, why is this so important?”

My turn to smile. “Let me introduce a term – cognitive power. Cognitive power relates to the maximum number of variables a person can simultaneously deal with, in a given period of time. A manual task generally has a limited number of variables. Moving a pallet of ceramic tile in a warehouse requires a forklift, knowing which pallet, where is it located, where does it go, what’s in the way? There are a limited number of variables. And, those variables are physical and fixed.”

Sam nodded, so I continued. “Constructing a building is more complex. There are site considerations, zoning, platting, ingress, physical constraints, functional use, building codes, material availability, coordination of trades, availability of labor, influence of unions, finance logistics, even the weather. And some of the complexity arrives, not from the variables we know about, but, based on the timespan of the project (objective, goal), there will be variables we do not know about. The longer the project, the more uncertain the variables. Yet, to be effective, all the variables must be accounted for, including the ones we do not know about.”

“And so, a more complicated project will require more cognitive power,” Sam chimed in.

“We might try to count the number of variables to understand the complexity in a project, but the longer the project, the more some of those variable are unknowable. A better metric of complexity is to simply calculate the timespan of the project. We have to account for that uncertainty, ambiguity, in the decisions we have to make today.”