Karmona's Pragmatic Blog

Don't get overconfident… Tiny minds also think alike

Karmona's Pragmatic Blog

Delver Alpha Launch

July 15th, 2008 by Moti Karmona | מוטי קרמונה · No Comments

Delver - Search Your World

We have launched the Delver alpha an hour ago…
F5 on the monitors and statistics, geeee what a rush!!!







→ No CommentsTags: Delver · Internet

Dunbar’s Friends

July 7th, 2008 by Moti Karmona | מוטי קרמונה · 1 Comment

Circle of TrustDunbar’s number is the supposed cognitive limit to the number of individuals with whom any one person can maintain stable social relationships.
In a 1992 article, Dunbar used the correlation observed for non-human primates* to predict a social group size for humans and using a “simple” regression equation on data for 38 primate genera, Dunbar predicted a human “mean group size” of 150 (with 95% confidence interval of 100 to 230).

Dunbar’s Friends is my definition (and trademark ;-) to those few “real”, trusted and known people in your huge** online social network***.

* Primatologists have noted that, due to their highly social nature, non-human primates have to maintain personal contact with the other members of their social group, usually through grooming (and not “poking” as you might be expecting :-). The number of social group members a primate can track appears to be limited by the volume of the neocortex region of their brain.

** Did you know that Robert Scoble is following 21,060 people in Twitter, 2,992 in FriendFeed and only 71 “lousy” friends in Flickr

*** Social Network for Dummies – Lee and Sachi LeFever (a.k.a. the CommonCraft‘s family :) have created a wonderful video explaining social network in plain English.

→ 1 CommentTags: Internet · People · Social Network

Mary and James Smith

July 7th, 2008 by Moti Karmona | מוטי קרמונה · No Comments

Census 2000According to the U.S. Census Bureau Y2K statistics (accuse me for being nostalgic but this is as good as it gets until 2010)

* 7 most common Americans surnames are Smith, Johnson, Williams, Brown, Jones, Miller or Davis.

* 4 million surnames  are held by only one person.

* This can be very helpful when you are trying to guess someone name… with ~2,376,206 Smiths, I suggest Mr. Smith.

* This could be problematic when you are looking for Mary or James Smith and all you have is the name…

* Moti Karmona isn’t even there ;-)

→ No CommentsTags: Pareto · People