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Jun 07 2010

Why I’ve been quiet…

As you may have noticed, this blog has been a bit of a dead zone lately. There are several very good reasons for this – one being that a lot of my creative energy has been going into co-writing a book – and I thought it was time to come clean on it.

So first up, just because I get asked this all the time, the book is definitely *not* “A humble tribute to the leave form – The Book”! In fact, it’s not about SharePoint per se, but rather the deeper dark arts of team collaboration in the face of really complex or novel problems.

It was late 2006 when my own career journey took an interesting trajectory, as I started getting into sensemaking and acquiring the skills necessary to help groups deal with really complex, wicked problems. My original intent was to reduce the chances of SharePoint project failure but in learning these skills, now find myself performing facilitation, goal alignment and sensemaking in areas miles away from IT. In the process I have been involved with projects of considerable complexity and uniqueness that make IT look pretty easy by comparison. The other fringe benefit is being able to sit in a room and listen to the wisdom of some top experts in their chosen disciplines as they work together.

Through this work and the professional and personal learning that came with it, I now have some really good case studies that use unique (and I mean, unique) approaches to tackling complex problems. I have a keen desire to showcase these and explain why our approaches worked.

My leanings towards sensemaking and strategic issues would be apparent to regular readers of CleverWorkarounds. It is therefore no secret that this blog is not really much of a technical SharePoint blog these days. The articles on branding, ROI, and capacity planning were written in 2007, just before the mega explosion of interest in SharePoint. This time around, there are legions of excellent bloggers who are doing a tremendous job on giving readers a leg-up onto this new beast known as SharePoint 2010.

BBP (3)

So back to the book. Our tentative title is “Beyond Best Practices” and it’s an ambitious project, co-authored with Kailash Awati – the man behind the brilliant eight to late blog. I had been a fan of Kailash’s work for a long time now, and was always impressed at the depth of research and effort that he put into his writing. Kailash is a scarily smart guy with two PHD’s under his belt and to this day, I do not think I have ever mentioned a paper or author to him that he hasn’t read already. In fact, usually he has read it, checked out the citations and tells me to go and read three more books!

Kailash writes with the sort of rigour that I aspire to and will never achieve, thus when the opportunity of working with him on a book came up, I knew that I absolutely had to do it and that it would be a significant undertaking indeed.

To the left is a mock-up picture to try and convey where we are going with this book. See the guy on the right? Is he scratching his head in confusion, saluting or both? (note, this is our mockup and the real thing may look nothing like this)

This book dives into the seedy underbelly of organisational problem solving, and does so in a way that no other book has thus far attempted. We examine why the very notion of “best practices” often makes no sense and have such a high propensity to go wrong. We challenge some mainstream ideas by shining light on some obscure, but highly topical and interesting research that some may consider radical or heretical. To counter the somewhat dry nature of some of this research (the topics are really interesting but the style in which academics write can put insomniacs to sleep), we give it a bit of the cleverworkarounds style treatment and are writing in a conversational style that loses none of the rigour, but won’t have you nodding off on page 2. If you liked my posts where I use odd metaphors like boy bands to explain SharePoint site collections, the Simpsons to explain InfoPath or death metal to explain records versus collaborative document management, then you should enjoy our journey through the world of cognitive science, memetics, scientific management and Willy Wonka (yup – Willy Wonka!).

Rather than just bleat about what the problems with best-practices are, we will also tell you what you can do to address these issues. We back up this advice by presenting a series of practical case studies, each of which illustrates the techniques used to address the inadequacies of best practices in dealing with wicked problems. In the end, we hope to arm our readers with a bunch of tools and approaches that actually work when dealing with complex issues. Some of these case studies are world unique and I am very proud of them.

Now at this point in the writing, this is not just an idea with an outline and a catchy title. We have been at this for about six months, and the results thus far (some 60-70,000 words) have been very, very exciting. Initially, we really had no idea whether the combination of our writing styles would work – whether we could take the degree of depth and skill of Kailash with my low-brow humour and my quest for cheap laughs (I am just as likely to use a fart joke if it helps me get a key point across)…

… But signs so far are good so stay tuned :-)

Thanks for reading

 

Paul Culmsee

www.sevensigma.com.au

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Nov 11 2009

A simple way to improve your estimating (and a cool pub trick) – Conclusion

…and we’re back!

Well… that was a long commercial break wasn’t it :-)

In case you missed part 1 of our version of the show “deal or no deal”, you missed the big cliff-hanger and you really should read part 1 first. For the rest of you, to quickly recap, I came out of the closet and admitted by secret teenybopper shame, told the world that my wife had a teenage thing for Jean Claude Van Damme, showed the effect of beer goggles and introduced the notion of cognitive bias and how it can affect judgement.

i also demonstrated how, by altering the frame of reference, to a problem something that at first seems completely unquantifiable “how the hell do I know how many SharePoint developers drive yellow cars?”, is actually not as “impossible” as you may first think.

At the end of the last post I left you with a $10000 dilemma. You had to make a “deal or no deal” decision about going with your estimate about SharePoint developers who own yellow cars, or to instead cast your lot with a bag of marbles with a 9 in 10 chance of winning the prize. Just to refresh your memory, here is the salient part of the pub conversation.

  • Me: Okay, so you are 90% sure that here are between 300 and 2000 SharePoint developers in the world with a yellow car?
  • Them: Yes
  • Me: So, let’s make this like the game show “deal or no deal”. If you are right and the answer is within your range, you will win $10000. BUT you have an alternative…
  • Them: Ok…
  • Me: What if I were to present you with a bag containing 9 red marbles and 1 black marble and offer you $10000 if you pull out a red marble. Pull the one black marble, and you miss out on the money. Do you want to stick to your estimate or do you want to draw a marble?

So have you decided? Now be honest and see how you went against the 4 outcomes that I have experienced when trying this on people. Here are the possible answers in order of popularity…

  1. The person chooses to pull from the bag of marbles rather than their ranged estimate. (This is the predominant answer for all people I have tried this with – perhaps 70-75% of all responses).
  2. The person chooses to use their estimate over the bag of marbles. (perhaps 25% of people have answered with this option)
  3. Upon hearing the bag option, the person wants to change their ranged estimate. (Happened to me once)
  4. The person doesn’t care which method.. (never happened to me)

So which is the right answer to this question? 

(drumroll) Lets tackle the possible answer in order of likelihood.

“Take the marble! take the maaaaaarble!”

For the 70 odd percent of you who opted to take your chances with the bag of marbles, GONG! you lose!

image

Better double check your estimates in future because you have demonstrated that you are over-confident in your estimates. In other words, you are suffering from optimism bias. To explain why, think about the original question carefully. I asked originally for a ranged estimate that you were 90% confident with.

I then presented an alternative that has a 9 out of 10 chance of success – also 90%. From a statistical point of view, you should be completely ambivalent as to which option to use. Therefore, despite being asked for a range that you were 90% confident with, the range you actually estimated is not really 90% at all. It has to be less than 90% for you to prefer a clear 9/10 probability.

So that is why you are so stressed and busy! You keep giving crap estimates that make life harder for you! :-) Either that or you are too nice and when your project manager looks at you with those big, sad project manager eyes, your heart melts and you relent.

Isn’t that cool in a nerdy way? It is very interesting to see people’s faces as the penny drops to this logic and they suddenly realise just how bad some of their past estimates have been as a result. The consolation prize is just about 4 out of 5 people do exactly the same as you and take the marbles.

“No deal, I will stick with my estimate”

For the smaller group who decide that their estimate is preferred, you also lose.

image

In this case, the reason why should be pretty obvious. You are so paranoid about getting it wrong, that you have made an estimate that is more like 95% or even 99% confident. Why? your range is too wide for 90% because when presented with a clear 9/10 chance of success, you chose your original estimate. While that may sound like you are confident, in reality you are a bit of a wuss, because in fact you are under confident with your estimate. So grow some balls you weenie :-)

Honorary mention – “I want to change my estimate”

At the Best Practice Conference in DC, I attempted this pub trick on Yoav Lurie from Synteractive, who is much more of a business and strategic thinker than us IT nerds. His response I think, deserves an honorary mention for being the closest to winning the game. In this example, I asked him to estimate in feet, the wingspan of a Boeing 747. I knew instantly that he was a good estimator because of the logic he used to come to a range.

“Hmm, well an aircraft seat is maybe one and a half feet, and there will be 10 seats in the cabin, with two passages that are probably two feet in width…so that ads up to…”

What do you notice about what Yoav did? Straight away, he related the wingspan of an aircraft (a clear unknown), to something he could make a reasonable estimate of (the width of an aircraft seat). After all, we have all sat in an aircraft seat in sardine (economy) class and know how cramped it is. He knew there were three rows of seats and related this to the width of the cabin, which he then related to the size of the wing. Deducing that the wing might be 4 to 6 times the width of the cabin, he then was able to make a very good ranged estimate of the overall wingspan of the plane.

I was very impressed at his estimate and how he arrived at it, but I still got him :-)

As soon as I presented him with the bag of marbles alternative, without missing a beat he said “I want to change my estimate”. It took only a split second of presenting a clear 90% probability made Yoav realise that his estimate was not 90% and he was still a little overconfident.

That being said, Yoav’s method of relating something known to help frame the reference to something unknown is the only time anyone has used any sort of rigour in forming an estimate and very impressive for the pub setting :-)

The right answer

Okay, so as you may have guessed by now, the right answer is to shrug your shoulders and say “I don’t care” or wave your hand at me and say “pfft, whatever”. (This is one of the few times saying you couldn’t care less is the right answer). In doing so, you have placed equal weight upon the choices, based on the assumption that both are 90% probabilities.

Neat pub trick huh? It certainly gets people thinking.

How to calibrate yourself

Douglas Hubbard talks about “calibrated estimates” in his books and has an appendix of calibration questions, that are designed to help you perceive and account for cognitive bias in your estimating.

What you should take away from this exercise is that when asked to estimate on something you are uncertain about, make your initial estimate. Then, pretend you are in the game show and you have to pick between this estimate and the marble. If you feel that you would take the marble over your estimate, increase the width of your range until you feel that it doesn’t matter which option you pick.

Conversely, if you are one of the wimps who are under confident, then reduce the width of your range, until you feel that you have no particular preference of your estimate vs. the marbles.

In the same way that reframing a problem led from something being unquantifiable to something that indeed had a upper and lower range, by reframing the estimate against a unambiguous probability such as a bag of 10 marbles with 9 red, helps you to account for cognitive bias in your estimates.

Conclusion

So to reiterate my key points to this post

  1. Many things that seem unquantifiable are easier to quantify than you think, once you think in terms of ranged estimates and probability.
  2. Your bad taste in fashion and music when you were a teenager still manifests itself today and it is called cognitive bias.
  3. There are easy methods that you can use to calibrate yourself better so that your estimating radar is more finely tuned.

Most importantly of all however, you learned that my wife liked Jean Claude Van Damme in the 80’s and you know that I am in big trouble when she reads this! :-P

Thanks for reading

Paul

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