I am a newbie to Critical Chain. I have read the book written by Goldratt and by Newbold and Lawrenece P.Leach. Can somebody help me with the avialbale methods...
Hi, Neo There are many methods. The simplest is one Goldratt proposed initially. It is based on estimating tasks as you would normally do, and reducing the...
I wrote an article for PMI Journal on this because I have a proposal that differs from the Goldratt one: start from the well-known PERT 3-point (pseudo...
"This is more scientific and verifiable than the original critical chain approach." How so? ... [Non-text portions of this message have been removed]...
Neo: The 50% buffer size is a rule of thumb. Theoretically it is rooted in statistics but the real reason you need a rule of thumb is that an immature...
Hi, Richard Yes, when they have the real data, and some evidence it is not confounded by multi-tasking (e.g. where they assign full-time project teams). The...
... there are other reasons for not blindly cumulating the "spare time" made up of the offcuts beyond the 50% probability: 1) simple addition of these...
A few points are not clear to me here: 1) which buffers are you talking about? I may have misunderstood, but it sounds like a contingency buffer, not a...
I stated that the method based on the standard deviation is scientific and verifiable for the following reasons: since the buffer length will be based on a...
I stated that the method based on the standard deviation is scientific and ... Yes BUT. As discussed many times, In a true project we are not just dealing with...
I do not believe that the buffers should be used as a catch-all or an excuse not to carry out effective risk management. As I understand Goldratt's argument,...
Why do we get three replies from you and not one? Is there an echo? You are entitled to your beliefs about buffer sizing and how these might change over time...
Hi, Kik You may enjoy my PM Journal article on buffer sizing. You will find it on my WEB site. Published in 2003, it includes considering PERT, which has...
Greetings to all! I read a Piney's article (I believe in a PMI journal 1999 or 2000) regarding CC and CPM, where it was clear to me that the author believed...
More discussion on buffer sizing! Again! Douglas and Lynn Brown <padgettbrown@...> wrote: The 50% buffer size is a rule of thumb. Theoretically it is...
Kik: I agree with your points. Since our new friend is a CCPM newbie, it is more important to be real than to be technically correct. You will probably agree...
On the subject of buy-in, someone sitting near me at last year's TOCICO mentioned that they get better buy-in by advising team members that they are splitting...
Richard said: [REZ] Now, clearly a reasonable rule of thumb can "work". But how is a rule-of-thumb using organization ever going to wean itself off it, and ...
Richard, you said: "note that the accuracy of their estimate is NOT critical (a nice side effect of the buffers). But their buy in is." What methodology do you...
1. Sponsorship, led by a well-respected person, who will make clear the problem the company faces if they don’t get better, why the company favors CC, and...
Outstanding book that is a great tool for any change effort (and should be appropriate anywhere you need to gain buy-in for a process change effort): "Fearless...
Todd, As I understand it, the "cone of uncertainty" corresponds to the assumption that, as you get nearer to a target, you are much more likely to hit the ...
Yes you did. I thinking the "cone of uncertainty" only addresses special cause variation and not common cause variation. So as a project progresses then the...
Frequently there is mention on this list of common and special causes, fundamental concepts of Statistical Process Control, in the context of Critical Chain...
Richard, I am not sure if Tony is on this list. ... -- __________________________________ Santiago Velásquez Martínez [Non-text portions of this message have...
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