Category Archives: Theory


Visual Recall Devices for Electrodynamics formulas

Ingenious use of hand shapes to recall the structure of formulas in Electrodynamics. The kernal of this wisdom is that the hand is one of the few “devices” that must be allowed in any testing situation for students. Yes, I know there is an iPhone app for each formula that plots in 3D, etc. But what if you had solve these equations after a ship wreck?

Visual recall for physics (electrodynamics) formulas (equations)

War of the Tentacles: Connection between Engagement, Ease of Use, and Stickiness

I was using today, to add artist concert tracking to my profile. I noticed the variety of ways the site uses to display related artists you “may also want to track”. This reminded me of two “related” features of web sites: Amazon’s famous related product recommendation engine, and the Facebook social plugin options for extended into your web pages. The word Tentacles now pops into my head, and sure enough it is also discussed that way elsewhere:

How facebook is slowly creeping its tentacles all over your web

Obviously huge topic, but to summarize in short form:

Engagement means interesting, captivating, and induces actions and exploration on the part of the [website] user.

Ease of Use means actions are visible and marked in a way that desired goals are easily obtained by minimum number of clicks.

Stickiness means that the more a user (customer) uses the product, the more dependent they become on it, leading to audience growth, usage per person growth, and lack of churn (customers leaving the product or service).

So with Songkick, remember the more artists you track, and more work you do refining the desired list, the more “invested you are in the platform” and the data they store in your profile is more personalized. Its “seems” good for you, increases your loyalty and dedication and possibly usage. Its good for them, because its less likely that you would ever leave for any other service or competitor. And there will be some more…. To over simplify, I offer this conceptual equation.

Stickiness = Ease of Use + Engagement + Profile Depth Functionality (PDF)

Where in this case, PDF means the ability to connect to other people, artists, events, groups, anything that builds structure or data about your interests, desires, preferences.

Wikipedia Defines Sticky Content here

The interest question is: What if there was a platform called “portable connection”; that delivered the meta data of your past platforms (e.g. Myspace and Facebook) to some new platform (e.g. Tumblr)?

My daughter is already bored with Facebook, and is now extolling the virtues of Its interesting to see how children can demo the these social platforms in middle school to each other and cause “adoption without commission”…As any platform grows and its feature set becomes less disruptive and its ad content becomes more disruptive, it paves the way for the next generation.