This document discusses challenges with syndicating calendar events across different platforms and formats. It notes that while an average user may want privacy and authentication with email, getting PGP to work can be frustrating. The document also discusses computational thinking concepts like recursion, abstraction, and modularization. It proposes organizing calendar feeds into categories and representing events using iCalendar format instead of HTML, PDF, or RSS to better allow computers to understand the information.

1. Intro
Why Johnny Can’t Syndicate
Jon Udell
University of Michigan School of Information
January 18, 2013
(And What We Can Do About It)

2. Why Johnny Can’t Read

3. Why Johnny Can’t Encrypt

4. If an average user of email feels the need for privacy
and authentication, and acquires PGP with that
purpose in mind, will PGP's current design allow that
person to realize what needs to be done, figure out
how to do it, and avoid dangerous errors, without
becoming so frustrated that he or she decides to give
up on using PGP after all?
Whitten and Tygar “derived the following question on which to focus our
evaluation: “
An average user of email acquired PGP?
In what alternate universe did that happen?

5. Phil Libin
"The basics of asymmetric cryptography are fundamental concepts that
any member of society who wants to understand how the world works, or
could work, needs to understand. They are as fundamental as the basics of
supply and demand and monetary inflation."

6. Jeannette Wing
“Computational thinking is thinking recursively … using abstraction and
decomposition … separation of concerns … choosing appropriate
representations … modularizing … “

7. Mark Surman

8. Event posters in Keene

9. Ann Arbor Chronicle

10. https://github.com/judell/elmcity

11. A2Cal today all
Today in Ann Arbor

12. How not: AnnArbor.comThe “Submit Your Event” dilemma

13. Or: A2Y Chamber
The “Submit Your Event” dilemma

14. Or: ArborWeb.com
The “Submit Your Event” dilemma

15. A2 Gov Web Page

16. Leslie Science Web Page

17. Leslie Science on Facebook

18. Leslie Science on NatureFind

19. A2 Gov Legistar

20. The long tail of the iCalendar ecosystem
Google Calendar
Kennedy Space Center Launches by Chad
University of Michigan Museum of Art
Church of Jesus Christ of Latter Day Saints

21. RSS/Atom Validator

22. iCalendar Validator

23. A3 Arts

24. “We posted weekly.pdf to the website.
Isn’t that good enough?”

25. Ann Arbor’s Public Schools

26. Slauson Middle
Organizing feeds into categories

27. The HTML/PDF/RSS fallacy
How humans represent calendar events:
“Why Johnny Can’t Syndicate, Jon Udell, Ehrlicher
Room, 3100 North Quad, Jan 18 at noon”
How computers represent calendar events:
DTSTART;TZID=EST;20130118T120000
SUMMARY:Jon Udell: Why Johnny Can’t Syndicate
LOCATION:Ehrlicher Room, 3100 North Quad
HTML,
PDF,
RSS
iCalendar

28. Seven ways to think like the web

29. music
health
sports
environment
tech
Community Arts
and Culture Hub
art
business
music art
Community Tech
and Business Hub
tech business
State Hub A: Arts and Culture
Ann Arbor music
Ann Arbor art
Detroit music
Grand Rapids art
…
State Hub B: Tech and Business
Ann Arbor tech
Ann Arbor business
Detroit tech
Lansing business
…
…
…
Bi
g
pi
ct
u
r
e

30. Maker Works

31. Retiring to Ann Arbor

32. http://blog.jonudell.net/2011/02/25/a-tale-of-two-dams/

33. http://www.ci.keene.nh.us/city-keene-tagging-initiative

34. http://www.ci.keene.nh.us/tags

35. WestStDamKeene as a topic
http://www.sentinelsource.com
/topic/?q=weststdamkeene
http://www.ci.keene.nh.us/weststdamkeene

36. WestStDamKeene as a search termhttp://www.bing.com/search?q=
weststdamkeene
http://www.google.com/search?q=
weststdamkeene

37. Insurers and providers

38. Fini
jonu@microsoft.com
http://elmcity.cloudapp.net