Don't Chase It - Theory of Constraints

Tom Foster of ManagementBlog.org interviewed me about Goldratt's Theory of Constraints. Here is the third installment:

--- Start interview
TF: You talk about bottlenecks in systems. Conventional wisdom says bottlenecks are bad and that it is management’s job to get rid of them.

Dr. Lisa: Bottlenecks are what determine how much money you can make. I don’t think of them as bad. They just are. And by definition you will always have one. The question is, where is it? But, unless you have unlimited profits, you have a bottleneck, somewhere.

If you think bottlenecks or constraints are bad (like we were taught), then you will strive to get rid of them. But, as soon as you get rid of one bottleneck, another pops up, somewhere else. Essentially, we are taught to chase them around. Find them and get rid of them. It’s like being trapped in that arcade game – Whack-A-Mole.

If, by definition, you always have a weakest link or bottleneck, instead of chasing it around, my recommendation is to strategically place it. You decide where you want this control point to be. By doing that, you can get very good leveraging it and knowing how to control and grow your business with this control point.

So bottlenecks are not bad. Management’s job is to control them so that we can meet our commitments and grow. And more importantly to LEVERAGE them so that profits can be maximized.
---End interview

...to be continued.

Here's to maximizing YOUR profits!
Dr Lisa Lang
(c)Copyright 2008, Dr Lisa, Inc. All rights reserved.

Maximize the System - Theory of Constraints

Tom Foster of ManagementBlog.org interviewed me. Here is the second installment:

--- Start interview
TF: Intuitively, we try to maximize efficiency (profitability) of the entire company by working in each functional area to maximize its efficiency. We are thinking if every area is absolutely efficient, then by default, the entire company will be profitable. You disagree.

Dr. Lisa: Take an extreme case where a company may break itself into separate P&Ls. The logic is that if we maximize each P&L then we will maximize the P&L of the company as a whole. (And of course it’s much easier to hold each manager accountable only for their own P&L.)

I have a client, a not for profit, who collects donations that they sell in 14 retail stores. Each store has its own P&L and each store manager is measured and rewarded accordingly. The average selling price of an item is $2.25.

Imagine you are one of the underperforming stores in this company. To improve your profit, you need to sell a lot of volume at $2.25.

There are, however, some donated items that fetch $100 or more and sell very quickly. All the store managers love these items. Yet, there is one item that sells for $100 in 13 of the 14 stores, yet, sells for $200 in one of the stores, because of its location. It’s a cowboy item and this store is located near cowboys.

If I hold this item up in front of the group of 14 store managers, which store manager wants it for THEIR store? Of course, they all want the item, but, who should get the item to sell? The cowboy store can sell it for double.

So, if one of the other stores (not the cowboy store) gets a walk-in donation of one of these cowboy items, what should that store manager do?

Most store managers would keep quiet and sell the item quickly for $100 to improve their own P&L. This maximizes their own silo, but steals valuable profit from the company as a whole. This story illustrates how maximizing each silo does not necessarily benefit the system as a whole.
When management teams attack a problem, most often they try to fix a small segment of the company without even seeing the larger system problem.
---End interview

...to be continued.

Here's to maximizing YOUR profits!
Dr Lisa Lang
(c)Copyright 2008, Dr Lisa, Inc. All rights reserved.

Theory of Constraints - Systems Problems

Tom Foster of ManagementBlog.org interviewed me. Here is the first installment:

--- Start interview
A couple of weeks ago, I got to spend some time with Dr. Lisa Lang about one of my favorite subjects, Theory of Constraints. Like many of my favorite subjects, Theory of Constraints is a mindset that leads you to take action (make the right move) that is counterintuitive. In other words, left to your own devices, you would intuitively do exactly the wrong thing.

Theory of Constraints helps us to do the opposite. Theory of Constraints has been around for quite a while, but was most coherently explained by Eli Goldratt in a series of books starting with The Goal. Lisa Lang (Dr. Lisa) spent three years as the Marketing Director for Goldratt Consulting. During the past two decades she has used Theory of Constraints (TOC) to help companies solve their most serious problems. This week, I will share with you some of our conversations.

TF: When a management team realizes it has a system problem, what mistakes does it make trying to attack the situation?

Dr. Lisa: Most often, the team doesn't realize it’s a system problem. Because we are taught to manage in silos, or departments, or teams, most often, we attack the problem inside the silo, and don’t impact the system much, if at all.

By silos, I mean, we tackle sales problems separate from operations problems separate from admin problems. This happens, in part, because we have been trained to work inside our own area, indeed, not to meddle in other areas.

If you look at your organizational chart, you know the silos that exist in your company. Silos, in and of themselves are not bad. It’s that we measure each silo thinking that if we maximize each silo then we will maximize the system or the company as a whole and that’s just not what happens.
---End interview

...to be continued.

Here's to maximizing YOUR profits!
Dr Lisa Lang
(c)Copyright 2008, Dr Lisa, Inc. All rights reserved.