celtic said:
Installing cans is a perfect example of a 2 man job .... one man is drilling the holes, the other slinging wire or humping material in....then one guy is installing the fixtures, while the other cleans up.
This isn't highly technical work, a little converstaion isn't going to slow the job down.
"Interaction" might have been the wrong word. I mean all the different ways that people talk to, run into, are dependent upon, etc. There's interactions between the framing carpenters and electricians because you can't wire before framing. I live and breath these things --
The classic example of a task that can't be subdivided or performed in parallel is a baby. If the goal is "One Baby", nine pregnant women will not produce a baby in one month's time.
Tasks that can be subdivided, but which don't parallize easily, might be installing branch circuits. If you have ten branch circuits, you could throw ten people at it -- one circuit each. Assuming they don't run all over each other, they can get the job done in as many person hours as one. But "run all over each other" is an assumption,and unless someone coordinates the home runs being started at the panel, there's going to be a bottleneck there. If you broke each branch circuit down into individual steps -- for example, 10 pieces of wire to run, 10 devices to install for each branch circuit -- the best you can get is 10 people doing two tasks each because the wires have to be in the boxes before the devices can be installed. And again, that assumes they don't climb all over each other, which I think everyone will agree would happen, even if they all took turns with their home runs. Analyzing these sorts of interdependencies is a skill unto itself and applies to just about everything -- computer programming, construction, demolition, buying the wife a present for Valentine's Day
FWIW, this same kind of "people climbing all over each other" happens in highly technical work as well. I led a $4.5M project years ago and we had to put up with being short-staffed because where we were in the project, adding more people would have made us late. Not just "cost more", but "late" -- actual negative productivity. My boss screamed bloody hell (we had a $20M contract resting on the project we were doing) wanting to know why I didn't want more people, but I stood by my decision and we came in on-time.
What will slow the job down is one man running around trying to do it all and forgetting things/dropping things..like a wirenut - another trip up and down the ladder...all the while talking to himself in French @#% &*!.
LOL!
Been there, done that.