42

Nice answer. Do you know the question?

Okay, I’m likely going for triple-word-score here, but I’d like to discuss what I call “Qualitative Feature Polarization” in terms of how to read data.  I’ve talked about this before in the specific case of how to rate a sushi restaurant, but I think the principles apply to any situation where people are asked to make a judgement/evaluation.

The problems with most evaluations are as follows:

  • ranking things in a straight good-to-bad list throws out too much information
  • all data points are contextual, but we rarely understand the context
  • the real question– and therefore the real answers– are often not present

That last point is perhaps the most important: many times we are asked to make an evaluation from data that is based on assumptions in the goals or undefined context in the business model.  For example: If Zappos were to match its prices against WalMart, it would “lose”, but in terms of service, it would “win”.  Conversely, wait times on the customer service line to Zappos are “much better” than when I call WalMart.  In an evaluation of customer service level, which one is correct?  It depends on the business model, and on the context.  In Vietnam, the US Army killed bad guys the enemy at a rate far more than our own casualty rate.  Wins used to be defined by simple body count, but we saw how that turned out.

The effficiency expert Pete Abila points out the Toyota quality method of “5 Whys” to try and find the real question (in hopes seting up an alanysis to find the real answer).  By simply asking the question “why?” at least 5 times, we can often get to the heart of the real problem, and strip away any assumptions or differences in the models we have put around the data results.

So, how to run an analysis that can provide sufficient context while also attempting to find the real issue? Whenever possible, I try to run all data in a method I call “Qualitative Feature Polarization”.  This method runs on some basic rules (which echo the problem points above):

  • Smash data sets together to see if any patterns arise (but remember your college statistics prof warnings about causality and correlation).  This is the serendipity part– the chance for an “a ha!” moment that might lead to a further inquiry or data set
  • Whenever possible, frame your data in left<–>right, blue<–>red, service<–>cost.  Applying such a framework to the Zappos vs. Walmart comparison would then lead you closer to the real issue: the business models are fundamentally different.
  • Whenever possible, highlight the specific areas that the results and evaluation have NOT answered yet.  In other words, show that the evaluation has uncovered some results, but that the reader/listener (your boss) should specifically NOT jump to some conclusions  (unless he has a mat) based on the data.  This isn’t because the data is incomplete, it’s because the data was investigated to look at a specific issue.  Thou shalt not extrapolate your summary.
  • Structure your analysis that leads you to a contextually-rich, polarized set of numbers.  These numbers should then guide the next choice of left or right, not good or bad.

Receptiveness to this analysis is a mixed bag.  If your audience is a fairly flat organization and the geeks are on equal footing, then qualitative feature polarization works well.  If the organization is fairly vertical, they likely just want “the answer.”  A good way to guage for this is the degree to which the org uses PowerPoint as a communications mainstay, and the level of complexity in the metaphors you spin out.

250px-suica.jpgI recently came back from an extended stay in my other home, Tokyo.  While there ,we did the usual daily things: ride the train, buy groceries, get lunch, eat sushi, watch Godzilla movies (well, okay, just once).  Here’s the thing: we only used a credit card maybe 3-4 times over 10 days, and used actual cash even less.  Everywhere we went, we used our Suica card.

This thing is metal, the size of a credit card, and uses contactless RFID to talk with whatever cash register is nearby.  Japan Rail started using Suica on the train wickets 10 years ago (traditionally, the choke point of inefficiency in any station) in order to speed people through before they get packed in like sardines (you’ve seen the pics before, and yes– it’s true).  From there, it soon spread to the convenience kiosks on the platform, the convenience stores next door, and now looks pretty ubiquitous anywhere within a kilometer of the station (which means everywhere except your grandma’s house).

Visa and Mastercard never got very far in Japan (compared to marketshare in the US).  JCP (a Japan-specific credit card) had a good run, but looks to be shrinking to second-class status like Discover Card.  Cash was always king: I used to walk around with the equivalent of $500 in my back pocket; most Japanese had $1000 on them at any given time.  Big cash + crowded trains = pickpocket’s dreamland.  I couldn’t ever figure out why crime was so low.

But enter the Suica– it’s got both Cash and Credit Cards beat:

  • can be loaded up with credit via monthly automatic deposit, cash in an ATM, or even cash-back from some POS
  • personally stamped with your daily commute route
  • same size as a credit card
  • no numbers or identity to be stolen
  • MUCH MUCH faster than a credit card transaction

visa1.jpgThat last point is the killer.  To buy anything, all we had to do was tap this thing inside a circle on the glass counter, as if we were beknighting the transaction,  done.  Meanwhile, a credit card requires a swipe, a printout, the hostess signing the receipt, and we (the buyer) countersigning.  I know that some US places are just accepting the one swipe under a given amount (no signing required under $25 or so), but it’s still slower.

My prediction: Suica or other RFID cards are coming to the US soon (some are already here).  They’ll take a good chunk away from Visa corporation, especially in mass-transit towns like Boston, NYC, DC, and/or San Francisco.  My money is on Boston or San Francisco, especially if they can figure out a way to build community-centric bullshit around the card.

If I were Yelp, I would be teaming up with JR on bringing a branded card to SFO right away.

I am working on a project, and could use your help: how do you rate a sushi bar?  The simple “4 stars!” doesn’t really work, because I firmly believe that one cannot reduce a good sushi experience to a single dimension: the food, the preparer, the server, the atmosphere, the drinks– so many elements go into a dining experience, and even more so for something as ethereal as sushi nite. And, to be blunt, I am not sure most of the unwashed masses out there can judge good sushi from great sushi (not on the fish, at least).  Simply rating by 1-5 ’stars’ or whatever doesn’t work.
What goes into the decision on where to eat?  If you could rate a sushi bar on maybe 3-4 dimensions, what would they be?
So, here are my initial thoughts:

1. Atmopshere:

Traditional < ---------------> Modern

2. Menu:

Fresh Fish< ---------------->Nice Sauces

3. Service/chef:

Middle-aged Japanese Men< ------------------> Good Looking Young Hipsters

What else do you consider when choosing a sushi bar?  What would the different points of the dimension be?

© 2010 Dave Jenkins contact me via twitter @davejenk1ns or via email blog at davejenkins dot com Suffusion WordPress theme by Sayontan Sinha