Rules and Laws Product Managers Should Understand (part 2)
Continuing from Part 1, here are more Rules and Laws to help Product Managers in their jobs.
Thackara’s Laws
John Thackara can best be described as a thinker, designer and innovator. He defined 2 laws (in his 2005 book In the Bubble) that are probably more obvious to all of us today, than they were 5 years ago when he first published them.
Law #1: “If you put smart technology into a pointless product, the result will be a stupid product.”
How true. A great example of this law in action is Microsoft Surface. Announced 3 years ago, in response to at about the same time as Apple’s revolutionary iPhone, it’s amazing to see exactly how little Microsoft has done with the technology of Surface. Meanwhile we know what Apple has done with the iPhone and iPad. BTW, the best thing that came out of Microsoft’s Surface announcement, was this video. ![]()
Thackara’s second law came from analyzing his own lack of amazement as his friend demonstrated all the great features of a brand new top-of-the-line Mercedes Benz. Brilliant engineering? Yes. Very expensive price tag? Yes. Wow factor? Nil.
Law #2: “Our capacity to be impressed by new technology diminishes in relation to the amount of pointless functionality added to everyday products.” Known as “the law of diminishing amazement (LODA).”
We’ve all probably experienced this in some form or another. Usually when, like Thackara, a friend is giddy with delight in explaining some new tech toy. Or, if you’re a Product Manager, when listening to a CTO or other technologist describe the wonders of the next amazing product he/she has envisioned.
And for those of you more mathematically inclined, you may appreciate Classen’s law which states:
Usefulness = Log (Technology)
Hanlon’s Razor
There’s debate as to the actual origin of this law. Some claim was a man named Robert Hanlon in 1980, others believe it was actually Robert Heinlein (the author) in 1941, and still others attribute it to Napolean Bonaparte. Regardless, the law is well worth remembering.
Never attribute to malice that which can be adequately explained by stupidity.
Keep this rule in mind when things don’t work out as planned.
For example, if you know you’ve done your job in researching, defining and delivering the right product to market, but your sales reps come back to you saying that the reason they can’t sell your product is because it lacks needed functionality or that it’s priced too high, you’ll know where the real problem resides.
Hofstadter’s Law
As someone who’s worked in software for a long time, I appreciate recursion when it’s used effectively. Hofstadter’s law is one such example. It states, quite cleverly:
It always takes longer than you expect, even when you take into account Hofstadter’s Law.
Keeping this in mind, always realize that when you set a target date for your next release, it will invariably change (for the worse) and the overall scope of your release will shrink. Guaranteed. And the only people to blame will be those who actually thought those original estimate were accurate.
For more information on this, see Planning Fallacy and Optimism Bias. A quick read of Parkinson’s Law wouldn’t hurt either.
Hawthorne Effect
This comes to us courtesy of experiments done with factory workers in the first half of the 20th century. An experiment was conducted to see what impact high and low lighting levels had on worker productivity. The workers were fully aware that they were being observed and their productivity increased for the duration of the experiment and then dropped once the experiment ended.
For those physicists out there, you may remember the Heisenberg Uncertainty Principle, or the Observer effect, both of which can be paraphrased as:
the act of observing a situation will (implicitly or explicitly) affect and change that situation.
Why is this important? When you do field studies with customers or users of your product, always keep in mind that your presence and the fact that your users know they are being observed will change their behaviour, and thus your findings. The more you can do to eliminate your impact as an observer, the more likely you are to get accurate results.
Intuit’s famous Follow me home program is an example of trying to minimize the Hawthorne effect.
I’ll stop here. There are many more rules and laws that can be applied to innovation, product development and product management.
Do you have any that you want to share?
Saeed
Related posts:
- Rules and Laws Product Managers Should Understand (part 1)
- Questions for Product Managers
- Product Managers need time to breathe…
- Product Management is spreading…technologists take note!
- Worth Repeating: Rules of the Product Management Jedi




[...] I’ll continue with more relevent rules and laws in Part 2. [...]
It’s always a great comedy moment when you get to make fun of Microsoft, but you got this one wrong. Microsoft has been working on Surface since 2001, and was most certainly not the answer to the iPhone. If anything, you could have used the Zune as an example.
Hi Luca.
Agreed that MS was working on Surface for a while before they announced it. The timing of their announcement though, at the same time as the iPhone launch, was clearly aimed at responding to the interest the iPhone had raised. It’s not a competitor to the iPhone (obviously), but showing off applications of multi-touch interfaces etc.
The technology in Surface is great. Definitely much more sophistication than in the iPhone. BUT, that’s the problem. It’s a lot of great technology inside a “dumb ass table”. The video link nails it.
The Zune, on the other hand, was simply a “me too” product with no significant technological innovation. It wasn’t a stupid product in itself, but given the market dynamics of media players dominated by iPod+iTunes, it was hardly a product that had a chance for real success.
New post – Rules and Laws Product Managers should understand (part 2) – http://bit.ly/aOFoqO #prodmgmt #innovation
I’d add all of the “laws” in Al Ries and Jack Trout’s The 22 Immutable Laws of Marketing.
Roger
Definitely worth a mention, but I was trying to use other less well known laws that people may not know of, or may not think could apply to Product Management.
Of the various R&T laws, which do you think would be the most important for people to keep in mind?
RT @onpm New post – Rules and Laws Product Managers should understand (part 2) – http://bit.ly/aOFoqO #prodmgmt #innovation
RT @onpm New post – Rules and Laws Product Managers should understand (part 2) – http://bit.ly/aOFoqO #prodmgmt #innovation
Continued inspiration from @crankypm – Part 2 of Rules and Laws Product Managers should understand http://bit.ly/aOFoqO #prodmgmt
@simonwitkiss Thanks. Included Hanlon's Razor in part 2 of my series. http://bit.ly/aOFoqO #prodmgmt
Love it! Part 2 of Rules and Laws Product (and Engineering) Managers should understand http://bit.ly/aOFoqO #tech #development (via @onpm)
RT @onpm: Continued inspiration from @crankypm – Part 2 of Rules and Laws Product Managers should understand http://bit.ly/aOFoqO #prodmgmt
RT @onpm: Continued inspiration from @crankypm – Part 2 of Rules and Laws Product Managers should understand http://bit.ly/aOFoqO #prodmgmt
Rules and Laws Product Managers Should Understand (part 2) – http://bit.ly/aOFoqO
More PM laws from @onpm, including my favourite, Hanlon's Razor http://bit.ly/bnms5r #prodmgmt #in
RT @simonwitkiss: More PM laws from @onpm, I like Thackara's 2nd law on pointless functionality – http://bit.ly/bnms5r #prodmgmt
"Rules and Laws Product Managers Should Understand (part 2) | On Product Management" ( http://bit.ly/dtQLFK )