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Tyranny of deadlines
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Utkan Uluçay, MSc., CDDP
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Tyranny of deadlines
1.
1 © 2013,
ProChain Solutions, Inc. Originally published as part of 2013 Scheduling Conference Proceedings – Orlando, Florida The Tyranny of Deadlines Rob Newbold, CEO, ProChain Solutions, Inc. Introduction Most people agree that speed is good. They also agree that deadlines are good, because ability to hit deadlines is considered to be a sign of good management. It’s a better worker who can consistently make and meet her deadlines; it’s a better company that has excellent due-date performance. What people rarely realize is that deadlines, taken by themselves, are inimical to speed. They promote safety time and multitasking; they cause project systems to be homeostatic rather than fast. The three sections of this paper discuss how deadlines can be bad, why the problems aren’t recognized, and what can be done to fix them. The Problem with Deadlines For purposes of this paper, I will call a “deadline” any date that you really don’t want to miss. Deadlines can be set for individual tasks or entire projects, they can be formal or informal. I have seen them used for projects as diverse as construction, drug development, and aircraft engineering. In fact, I have very rarely seen a project organization in which deadlines did not form an important part of management’s tracking and measuring system. Project health, from a time perspective, is translated as “are we going to hit our deadline?” Wall Street rewards predictability and punishes instability; individual workers are rewarded for hitting deadlines and punished for missing them. Deadlines come with the expectation that unless something goes drastically wrong, they should be achieved. The promise of deadlines is extremely simple and logical: if everyone hits their individual deadlines, the projects will hit their deadlines. But let’s explore what really happens. Work has variation. That is not a bad thing; ability to handle variation can be equated with adding value (Reinertsen, 1997, 16). Innumerable unpredictable occurrences, from weather to creativity to individual productivity, may affect how long things take. Therefore, in order to set deadlines that we can achieve with a reasonably high probability, our tasks and projects must contain a certain level of safety time. Otherwise the promise of deadlines is impossible. That safety time creates a conflict between individuals and the organization: customers (and managers) want a commitment as early as possible, because faster is usually better than slower; workers want a later commitment, in order to have a good chance to make their deadlines. Workers can expect safety time to disappear if they acknowledge it, so typically they don’t. In fact, workers often experience an actual conflict of interest: being transparent about how long things take and how much uncertainty there is, versus keeping it hidden in order to preserve safety time. Date discussions are rarely about what is real and credible, but about compromises that people think they can live with. This lack of transparency is certainly a problem. It can be seen, for example, in the prevalence of “schedule chicken”: a process of “contagious schedule slips” (Schedule_chicken, 2013, ¶1) stemming from a reluctance to report that you’re going to miss your deadline, instead hoping that someone else will have to report a delay first and thereby take the blame. But deadlines pose even bigger problems: they promote multitasking. For example, suppose you have a task that should take two weeks on average to complete and you’ve been given four. If someone asks you to do something else, why not agree? You have time. To say “no,” you would have to be unresponsive, which is never a good idea. Inability to deliver early is still another problem with deadlines. Here are a few reasons deadlines are rarely completed early, for projects or tasks: • If you deliver early, the next time you negotiate for safety time you will be given less. • If you are on track to deliver on time easily, there are probably other things – for example, other dates – that appear to be more urgent.
2.
2 © 2013,
ProChain Solutions, Inc. Originally published as part of 2013 Scheduling Conference Proceedings – Orlando, Florida • Others are basing their actions on your deadline, and will not be ready to move the work forward until that date. Sometimes they’re even upset when you deliver early. • When requirements are unclear, work can easily be handed off on a date rather than when it is “done.” Of course, this pushes problems downstream, where the cost of fixing them becomes dramatically greater (see, for example, Boehm, 1986, 15). Multitasking leads to decreased efficiency and longer cycle times (Goldratt, 1997, 125-127; Newbold, 2008, 43-47). It also leads to significant increases in variation, because it is very difficult to predict when or how much people actually will multitask. Dates end up being relatively arbitrary, because we can’t predict how much safety time will be needed. The more safety time you include, the more you need. The impact of all this on projects – deadlines, multitasking, rarely delivering early – is drastic. Cycle times and stress are high, efficiency and transparency are low. Ironically, management’s typical reaction to poor results is to emphasize deadlines even more, locking in the vicious cycle. An obvious retort is that some expert project managers use milestones and have excellent track records. To answer what’s going on there, I have one word: homeostasis. Deadline systems tend to be homeostatic relative to their deadline dates. They seek equilibrium around those dates. If a project or task is late, people work hard to get it back on track, sometimes working weekends and evenings to make it happen. If a project or task is early, people relax, maybe shuffling resources to something more urgent. There are pressures that move things earlier and later. Most project organizations are self-correcting as they try to hit their dates. Speed – above whatever is needed to hit deadlines – is agonizingly difficult. Good project managers rely on good scheduling as an early warning system in case things go wrong. They are adept at motivating their teams, grabbing additional resources, and stashing away safety time. Poor project managers may take some time to recognize when things have gone wrong. Most organizations have some range of project managers, meaning that – while projects are rarely very early – they are frequently late. In other words, the true homeostasis point – the equilibrium reached relative to deadline dates – averages somewhat later than the actual dates. On average, projects tend to be late. Better project management unquestionably makes a difference. However, in a deadline system, true speed is rare. In my experience, that is true even in well-managed project organizations, whether they schedule using CPM, critical chain, or some other approach. In summary, the “deadline promise” – make all your deadlines and the projects will finish on time – often doesn’t work. Unwillingness to deliver early promotes multitasking. Multitasking brings its attendant longer cycle times, low efficiency, high variability and high stress; making it harder to deliver early. The entire cycle generates poor transparency and poor due-date performance. Why the Problems Are Not Recognized The next logical question would be: if this is such a big deal, why don’t we talk about it? There are several reasons. Deadlines are a given, so we don’t talk about them. When is the last time you had a serious discussion about gravity? We look at due-date performance, but we rarely look at how early the most important projects are. Consider the Standish Group’s Chaos Report, that often-cited biennial survey of IT project health. Standish talks about projects that are cancelled, challenged, and successful. Many people have expressed reservations about their methodology. Here’s mine: statistically, there is a huge piece missing, namely how many projects are early. Some companies have R&D projects that have value of a million dollars or more for every day they can be delivered early. How can that be unimportant? Customers assume deadlines. In fact, sometimes funding is not available to support early delivery. That doesn’t necessarily mean that there is no advantage to finishing earlier. People don’t understand the cause-and-effect relationships that lead from deadlines to missed dates and poor productivity.
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ProChain Solutions, Inc. Originally published as part of 2013 Scheduling Conference Proceedings – Orlando, Florida Deadlines can be very convenient, because they eliminate the tiresome need for credible schedules and detailed priorities. For example, suppose you are assigned task A for project X and task B for project Y. Which do you work first? If the tasks have deadlines, that solves the problem: work whichever task is most in danger of missing its deadline. Maybe you multitask to make sure that each task continues to present minimal risk. But suppose task B is driving project X’s completion, and task A is not driving Y’s completion. Do you work X, to the detriment of a milestone on Y? Suppose completing project A has a hundred times the value of completing project B – what then? Organizations that have neither speed nor predictability tend to value predictability. They assume that predictability must come first, as a sign of good management. They intend to push for speed when good management is in place. Unfortunately, better management is often taken to mean more and more emphasis on due dates, which makes the problems worse. In fact, predictability and speed are both results of good management. The level of lateness is sometimes hard to identify clearly, because when it is clear that dates will be missed, they often change. We’re no longer considered late if the date is moved out. There are many justifications for this “moving finish line” syndrome: changes to scope, acts of God, vendor problems, and so on. Given the emphasis on deadlines, it isn’t surprising that people would want to point fingers away from themselves when deadlines are in jeopardy. The Solution People use a relatively small number of reasons to explain why they can’t avoid deadlines: • Deadlines are an essential means of dealing with customers. • Dates are how people communicate and interact inside a company. • Dates are how we measure people. • There is no real problem with deadlines; we don’t want to be late on our promises, and if we’re early, that’s fine. These reactions are truly difficult to overcome. Getting rid of deadlines would upend the universe as people usually understand it. It would require major changes to culture and systems. Because of this, and despite everything written above, I do not recommend getting rid of dates. Instead, I recommend putting them in context. Consider an organizational value expressed in the same way as the Agile Manifesto (Beck et al, 2001): we value speed over deadlines. It’s not that we don’t value deadlines; it’s that we value speed more. Deadlines must be put in a context of speed. In fact, let’s give it a little more emphasis: Deadline dates are fine until they conflict with speed. As a simple thought experiment, suppose you have a project worth $1,000 for each day it is delivered early, and another that is worth $100,000 per day. Finishing the first on time is fine – as long as the second is moving as quickly as possible. If you are familiar with agile or lean methodologies, this will seem perfectly normal. Here are a few ideas you can promote to help people in valuing speed over deadlines: • Communicate dates sparingly, preferably only for key deliverables. Use schedules and precedence-driven, value-based priorities. • When you have commitment dates, work to beat them. Make on-time performance a necessary condition and speed a competitive edge. You still have the deadline, but speed is even more important. • Promote the critical chain idea of creating explicit “buffers” (Newbold, 2008, 72-74) to track safety time. The end of the buffer is the commitment date, but you want to minimize consumption rather than consume it all. When we have date ranges based on credible project schedules, we can have scrutiny without negotiation or recrimination. We value speed over deadlines.
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ProChain Solutions, Inc. Originally published as part of 2013 Scheduling Conference Proceedings – Orlando, Florida • “Deadline conformance” is not a good measurement of people if the dates are arbitrary, or negotiated, or conceal a lot of variability. Instead, learn to measure people based on how they really do, for example capabilities, quality and speed of work, and attitude. Measure for early, not on-time. • It’s ok to value quality over speed, just don’t work to dates. Work to “done.” If you still think deadlines aren’t a problem, I urge you to contemplate them next time you’re waiting in a doctor’s office at 10 a.m. for a 9:30 appointment. Is that a homeostatic system? Is it chronically late? Do you think your doctor multitasks? References Beck et al. (2001) Manifesto for Agile Software Development. Retrieved on 1 April 2013 from http://www.agilemanifesto.org/. Boehm, B. W. (1986) Understanding and Controlling Software Costs [Electronic Version]. Retrieved on 31 March 2013 from http://csse.usc.edu/csse/TECHRPTS/1986/usccse86-501/usccse86-501.pdf. Goldratt, E. M. (1997) Critical Chain. Great Barrington, MA: North River Press. Newbold, R. C. (2008) The Billion Dollar Solution. Lake Ridge, VA: ProChain Press. Reinertsen, D. G. (1997) Managing the Design Factory. New York: The Free Press. Schedule_chicken. (2013, February 13). In Wikipedia, the free encyclopedia. Retrieved March 31, 2013, from http://en.wikipedia.org/wiki/Schedule_chicken.
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